TY  - JOUR
AU  - Ivković, Milivoje
AU  - Savović, Jelena
AU  - Stankov, Biljana D.
AU  - Kuzmanović, Miroslav
AU  - Traparić, Ivan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12872
AB  - A feature of Laser-Induced Breakdown Spectroscopy (LIBS), the ability to perform depth profiling, has been exploited to analyze a tungsten‑copper functionally graded material (FGM), considered a relevant candidate for components in a nuclear fusion reactor. The proposed method relies on establishing correlations between the depth of ablation craters and the number of laser pulses, along with the accompanying LIBS spectra acquired by varying a number of laser pulses. LIBS measurements were performed using a Q-switched Nd:YAG laser at 532 nm with 100 mJ/pulse energy under reduced Ar pressure. The ablation craters were analyzed using optical profilometry. The copper concentration at each specific depth was assessed using a univariate calibration curve constructed with intensity ratios of Cu I 521.82 nm and W I 522.47 nm spectral lines. The calibration samples were pure W and homogenous W/Cu composite samples with different Cu content (10.9% - 35.3%) whose composition was determined by X-ray fluorescence. The proposed method exhibits potential applicability for quantitative analysis of multilayered materials.
T2  - Spectrochimica Acta Part B: Atomic Spectroscopy
T1  - LIBS depth-profile analysis of W/Cu functionally graded material
VL  - 213
SP  - 106874
DO  - 10.1016/j.sab.2024.106874
ER  - 

@article{
author = "Ivković, Milivoje and Savović, Jelena and Stankov, Biljana D. and Kuzmanović, Miroslav and Traparić, Ivan",
year = "2024",
abstract = "A feature of Laser-Induced Breakdown Spectroscopy (LIBS), the ability to perform depth profiling, has been exploited to analyze a tungsten‑copper functionally graded material (FGM), considered a relevant candidate for components in a nuclear fusion reactor. The proposed method relies on establishing correlations between the depth of ablation craters and the number of laser pulses, along with the accompanying LIBS spectra acquired by varying a number of laser pulses. LIBS measurements were performed using a Q-switched Nd:YAG laser at 532 nm with 100 mJ/pulse energy under reduced Ar pressure. The ablation craters were analyzed using optical profilometry. The copper concentration at each specific depth was assessed using a univariate calibration curve constructed with intensity ratios of Cu I 521.82 nm and W I 522.47 nm spectral lines. The calibration samples were pure W and homogenous W/Cu composite samples with different Cu content (10.9% - 35.3%) whose composition was determined by X-ray fluorescence. The proposed method exhibits potential applicability for quantitative analysis of multilayered materials.",
journal = "Spectrochimica Acta Part B: Atomic Spectroscopy",
title = "LIBS depth-profile analysis of W/Cu functionally graded material",
volume = "213",
pages = "106874",
doi = "10.1016/j.sab.2024.106874"
}

Ivković, M., Savović, J., Stankov, B. D., Kuzmanović, M.,& Traparić, I.. (2024). LIBS depth-profile analysis of W/Cu functionally graded material. in Spectrochimica Acta Part B: Atomic Spectroscopy, 213, 106874.
https://doi.org/10.1016/j.sab.2024.106874

Ivković M, Savović J, Stankov BD, Kuzmanović M, Traparić I. LIBS depth-profile analysis of W/Cu functionally graded material. in Spectrochimica Acta Part B: Atomic Spectroscopy. 2024;213:106874.
doi:10.1016/j.sab.2024.106874 .

Ivković, Milivoje, Savović, Jelena, Stankov, Biljana D., Kuzmanović, Miroslav, Traparić, Ivan, "LIBS depth-profile analysis of W/Cu functionally graded material" in Spectrochimica Acta Part B: Atomic Spectroscopy, 213 (2024):106874,
https://doi.org/10.1016/j.sab.2024.106874 . .

TY  - JOUR
AU  - Milovanović, Dubravka
AU  - Rajčić, Boris
AU  - Ranković, Dragan
AU  - Stankov, Biljana
AU  - Čekada, Miha
AU  - Ciganović, Jovan
AU  - Đurđević-Milošević, Dragica
AU  - Stević, Zoran
AU  - Kuzmanović, Miroslav
AU  - Šibalija, Tatjana
AU  - Petronić, Sanja
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12723
AB  - This paper presents a study and comparison of surface effects induced by picosecond and nanosecond laser modification of a Ti6Al4V alloy surface under different ambient conditions: air and argon- and nitrogen-rich atmospheres. Detailed surface characterization was performed for all experimental conditions. Damage threshold fluences for picosecond and nanosecond laser irradiation in all three ambient conditions were determined. The observed surface features were a resolidified pool of molten material, craters, hydrodynamic effects and parallel periodic surface structures. Laser-induced periodic surface structures are formed by multi-mode-beam nanosecond laser action and picosecond laser action. Crown-like structures at crater rims are specific features for picosecond Nd:YAG laser action in argon-rich ambient conditions. Elemental analysis of the surfaces indicated nitride compound formation only in the nitrogen-rich ambient conditions. The constituents of the formed plasma were also investigated. Exploring the impact of process control parameters on output responses has been undertaken within the context of laser modification under different environmental conditions. Parametric optimization of the nanosecond laser modification was carried out by implementing an advanced method based on Taguchi’s parametric design and multivariate statistical techniques, and optimal settings are proposed for each atmosphere.
T2  - Micromachines
T1  - Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process
VL  - 15
IS  - 1
SP  - 5
DO  - 10.3390/mi15010005
ER  - 

@article{
author = "Milovanović, Dubravka and Rajčić, Boris and Ranković, Dragan and Stankov, Biljana and Čekada, Miha and Ciganović, Jovan and Đurđević-Milošević, Dragica and Stević, Zoran and Kuzmanović, Miroslav and Šibalija, Tatjana and Petronić, Sanja",
year = "2024",
abstract = "This paper presents a study and comparison of surface effects induced by picosecond and nanosecond laser modification of a Ti6Al4V alloy surface under different ambient conditions: air and argon- and nitrogen-rich atmospheres. Detailed surface characterization was performed for all experimental conditions. Damage threshold fluences for picosecond and nanosecond laser irradiation in all three ambient conditions were determined. The observed surface features were a resolidified pool of molten material, craters, hydrodynamic effects and parallel periodic surface structures. Laser-induced periodic surface structures are formed by multi-mode-beam nanosecond laser action and picosecond laser action. Crown-like structures at crater rims are specific features for picosecond Nd:YAG laser action in argon-rich ambient conditions. Elemental analysis of the surfaces indicated nitride compound formation only in the nitrogen-rich ambient conditions. The constituents of the formed plasma were also investigated. Exploring the impact of process control parameters on output responses has been undertaken within the context of laser modification under different environmental conditions. Parametric optimization of the nanosecond laser modification was carried out by implementing an advanced method based on Taguchi’s parametric design and multivariate statistical techniques, and optimal settings are proposed for each atmosphere.",
journal = "Micromachines",
title = "Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process",
volume = "15",
number = "1",
pages = "5",
doi = "10.3390/mi15010005"
}

Milovanović, D., Rajčić, B., Ranković, D., Stankov, B., Čekada, M., Ciganović, J., Đurđević-Milošević, D., Stević, Z., Kuzmanović, M., Šibalija, T.,& Petronić, S.. (2024). Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process. in Micromachines, 15(1), 5.
https://doi.org/10.3390/mi15010005

Milovanović D, Rajčić B, Ranković D, Stankov B, Čekada M, Ciganović J, Đurđević-Milošević D, Stević Z, Kuzmanović M, Šibalija T, Petronić S. Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process. in Micromachines. 2024;15(1):5.
doi:10.3390/mi15010005 .

Milovanović, Dubravka, Rajčić, Boris, Ranković, Dragan, Stankov, Biljana, Čekada, Miha, Ciganović, Jovan, Đurđević-Milošević, Dragica, Stević, Zoran, Kuzmanović, Miroslav, Šibalija, Tatjana, Petronić, Sanja, "Microstructure Formations Resulting from Nanosecond and Picosecond Laser Irradiation of a Ti-Based Alloy under Controlled Atmospheric Conditions and Optimization of the Irradiation Process" in Micromachines, 15, no. 1 (2024):5,
https://doi.org/10.3390/mi15010005 . .

TY  - JOUR
AU  - Petrović, Jelena
AU  - Ranković, Dragan
AU  - Kuzmanović, Miroslav M.
AU  - Savović, Jelena
AU  - Kiris, Vasili
AU  - Nevar, Alena
AU  - Nedelko, Mikhail
AU  - Tarasenko, Nikolai
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10658
AB  - Time-integrated optical emission analysis of laser-induced plasma on Teflon is presented. Plasma was induced under atmospheric pressure air using transversely excited atmospheric CO2 laser pulses. Teflon is a C-based polymer that is, among other things, interesting as a substrate for laser-induced breakdown spectroscopy analysis of liquid samples. This study aimed to determine the optimal experimental conditions for obtaining neutral and ionized C spectral lines and C2 and CN molecular band emission suitable for spectrochemical purposes. Evaluation of plasma parameters was done using several spectroscopic techniques. Stark profiles of appropriate C ionic lines were used to determine electron number density. The ratio of the integral intensity of ionic-to-atomic C spectral lines was used to determine the ionization temperature. A spectral emission of C2 Swan and CN violet bands system was used to determine the temperature of the colder, peripheral parts of plasma. We critically analyzed the use of molecular emission bands as a tool for plasma diagnostics and suggested methods for possible improvements.
T2  - Plasma Science and Technology
T1  - Diagnostics of laser-induced plasma on carbon-based polymer material using atomic and molecular emission spectra
VL  - 25
IS  - 4
SP  - 045507
DO  - 10.1088/2058-6272/aca30f
ER  - 

@article{
author = "Petrović, Jelena and Ranković, Dragan and Kuzmanović, Miroslav M. and Savović, Jelena and Kiris, Vasili and Nevar, Alena and Nedelko, Mikhail and Tarasenko, Nikolai",
year = "2023",
abstract = "Time-integrated optical emission analysis of laser-induced plasma on Teflon is presented. Plasma was induced under atmospheric pressure air using transversely excited atmospheric CO2 laser pulses. Teflon is a C-based polymer that is, among other things, interesting as a substrate for laser-induced breakdown spectroscopy analysis of liquid samples. This study aimed to determine the optimal experimental conditions for obtaining neutral and ionized C spectral lines and C2 and CN molecular band emission suitable for spectrochemical purposes. Evaluation of plasma parameters was done using several spectroscopic techniques. Stark profiles of appropriate C ionic lines were used to determine electron number density. The ratio of the integral intensity of ionic-to-atomic C spectral lines was used to determine the ionization temperature. A spectral emission of C2 Swan and CN violet bands system was used to determine the temperature of the colder, peripheral parts of plasma. We critically analyzed the use of molecular emission bands as a tool for plasma diagnostics and suggested methods for possible improvements.",
journal = "Plasma Science and Technology",
title = "Diagnostics of laser-induced plasma on carbon-based polymer material using atomic and molecular emission spectra",
volume = "25",
number = "4",
pages = "045507",
doi = "10.1088/2058-6272/aca30f"
}

Petrović, J., Ranković, D., Kuzmanović, M. M., Savović, J., Kiris, V., Nevar, A., Nedelko, M.,& Tarasenko, N.. (2023). Diagnostics of laser-induced plasma on carbon-based polymer material using atomic and molecular emission spectra. in Plasma Science and Technology, 25(4), 045507.
https://doi.org/10.1088/2058-6272/aca30f

Petrović J, Ranković D, Kuzmanović MM, Savović J, Kiris V, Nevar A, Nedelko M, Tarasenko N. Diagnostics of laser-induced plasma on carbon-based polymer material using atomic and molecular emission spectra. in Plasma Science and Technology. 2023;25(4):045507.
doi:10.1088/2058-6272/aca30f .

Petrović, Jelena, Ranković, Dragan, Kuzmanović, Miroslav M., Savović, Jelena, Kiris, Vasili, Nevar, Alena, Nedelko, Mikhail, Tarasenko, Nikolai, "Diagnostics of laser-induced plasma on carbon-based polymer material using atomic and molecular emission spectra" in Plasma Science and Technology, 25, no. 4 (2023):045507,
https://doi.org/10.1088/2058-6272/aca30f . .

TY  - JOUR
AU  - Vinić, Milica
AU  - Kuzmanović, Miroslav M.
AU  - Savović, Jelena
AU  - Ivković, Milivoje
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10694
AB  - In this study, plasma induced by a nanosecond Nd:YAG laser on thin oil films deposited on a silica wafer was characterized by evaluating the main plasma parameters. Spatially and temporally integrated spectral measurements were performed under experimental conditions optimized for elemental analysis of trace metals in oil. Time-resolved values of the spectral line intensities, electron number density, and plasma temperature were obtained from time-integrated measurements by subtracting averaged spectra recorded at different time delays. The electron number density was estimated using the Stark broadened profile of the hydrogen Balmer alpha line. Ionization temperatures were derived from Mg ionic to atomic line intensity ratios. The obtained apparent values of time-resolved plasma parameters were in the range of 1.1×1017 cm-3 (1.5 μs) to 1.5×1016 cm-3 (4 μs) and 9400 K (3 μs) to 7200 K (5 μs), depending on the delay time. Emission spectra of C2 and CN molecules were used to evaluate the rotational and vibrational temperature.
T2  - Journal of the Serbian Chemical Society
T1  - Diagnostics of laser-induced plasma from a thin film of oil on a silica wafer
VL  - 88
IS  - 2
SP  - 153
EP  - 167
DO  - 10.2298/JSC211228028V
ER  - 

@article{
author = "Vinić, Milica and Kuzmanović, Miroslav M. and Savović, Jelena and Ivković, Milivoje",
year = "2023",
abstract = "In this study, plasma induced by a nanosecond Nd:YAG laser on thin oil films deposited on a silica wafer was characterized by evaluating the main plasma parameters. Spatially and temporally integrated spectral measurements were performed under experimental conditions optimized for elemental analysis of trace metals in oil. Time-resolved values of the spectral line intensities, electron number density, and plasma temperature were obtained from time-integrated measurements by subtracting averaged spectra recorded at different time delays. The electron number density was estimated using the Stark broadened profile of the hydrogen Balmer alpha line. Ionization temperatures were derived from Mg ionic to atomic line intensity ratios. The obtained apparent values of time-resolved plasma parameters were in the range of 1.1×1017 cm-3 (1.5 μs) to 1.5×1016 cm-3 (4 μs) and 9400 K (3 μs) to 7200 K (5 μs), depending on the delay time. Emission spectra of C2 and CN molecules were used to evaluate the rotational and vibrational temperature.",
journal = "Journal of the Serbian Chemical Society",
title = "Diagnostics of laser-induced plasma from a thin film of oil on a silica wafer",
volume = "88",
number = "2",
pages = "153-167",
doi = "10.2298/JSC211228028V"
}

Vinić, M., Kuzmanović, M. M., Savović, J.,& Ivković, M.. (2023). Diagnostics of laser-induced plasma from a thin film of oil on a silica wafer. in Journal of the Serbian Chemical Society, 88(2), 153-167.
https://doi.org/10.2298/JSC211228028V

Vinić M, Kuzmanović MM, Savović J, Ivković M. Diagnostics of laser-induced plasma from a thin film of oil on a silica wafer. in Journal of the Serbian Chemical Society. 2023;88(2):153-167.
doi:10.2298/JSC211228028V .

Vinić, Milica, Kuzmanović, Miroslav M., Savović, Jelena, Ivković, Milivoje, "Diagnostics of laser-induced plasma from a thin film of oil on a silica wafer" in Journal of the Serbian Chemical Society, 88, no. 2 (2023):153-167,
https://doi.org/10.2298/JSC211228028V . .

TY  - JOUR
AU  - Petrović, Jelena
AU  - Savović, Jelena
AU  - Ranković, Dragan
AU  - Kuzmanović, Miroslav M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10167
AB  - This work presents a study of the applicability of laser-induced breakdown spectroscopy based on infrared transversally excited atmospheric CO2 pulsed laser for quantitative analysis of main inorganic elements in lignite coals. Calibration standards were prepared by mixing and pelleting an appropriate amount of rock reference material and graphite. Time-integrated spatially resolved measurements of analyte spectra of standard samples were used to construct univariate calibration curves of Al, Si, Ca, Fe and Mg. The spectral intensities of analytical lines were normalized by the carbon spectral line to compensate for the shot-to-shot fluctuation of plasma parameters. The obtained curves of growth have good linearity in a wide range of concentrations (up to 1% for Al and 3% for Si). Correlation coefficients were in the range of 0.955–0.993, depending on the element. Measured limits of detection (from 2.4 to 25 ppm for analyzed metals and 61 ppm for Si) are low enough to control the coal combustion process in power plants. The Stark-broadening and the Boltzmann plot method were used to determine apparent values of excitation temperatures and electron number densities. A relatively small but measurable influence of the concentration of metal elements on the plasma parameters was observed, which should be considered in quantitative analysis of coal samples with higher inorganic elements content.
T2  - Plasma Chemistry and Plasma Processing
T1  - Quantitative Analysis of Coal by Laser-Induced Breakdown Spectroscopy Using TEA CO2 Laser as the Excitation Source
DO  - 10.1007/s11090-022-10234-6
ER  - 

@article{
author = "Petrović, Jelena and Savović, Jelena and Ranković, Dragan and Kuzmanović, Miroslav M.",
year = "2022",
abstract = "This work presents a study of the applicability of laser-induced breakdown spectroscopy based on infrared transversally excited atmospheric CO2 pulsed laser for quantitative analysis of main inorganic elements in lignite coals. Calibration standards were prepared by mixing and pelleting an appropriate amount of rock reference material and graphite. Time-integrated spatially resolved measurements of analyte spectra of standard samples were used to construct univariate calibration curves of Al, Si, Ca, Fe and Mg. The spectral intensities of analytical lines were normalized by the carbon spectral line to compensate for the shot-to-shot fluctuation of plasma parameters. The obtained curves of growth have good linearity in a wide range of concentrations (up to 1% for Al and 3% for Si). Correlation coefficients were in the range of 0.955–0.993, depending on the element. Measured limits of detection (from 2.4 to 25 ppm for analyzed metals and 61 ppm for Si) are low enough to control the coal combustion process in power plants. The Stark-broadening and the Boltzmann plot method were used to determine apparent values of excitation temperatures and electron number densities. A relatively small but measurable influence of the concentration of metal elements on the plasma parameters was observed, which should be considered in quantitative analysis of coal samples with higher inorganic elements content.",
journal = "Plasma Chemistry and Plasma Processing",
title = "Quantitative Analysis of Coal by Laser-Induced Breakdown Spectroscopy Using TEA CO2 Laser as the Excitation Source",
doi = "10.1007/s11090-022-10234-6"
}

Petrović, J., Savović, J., Ranković, D.,& Kuzmanović, M. M.. (2022). Quantitative Analysis of Coal by Laser-Induced Breakdown Spectroscopy Using TEA CO2 Laser as the Excitation Source. in Plasma Chemistry and Plasma Processing.
https://doi.org/10.1007/s11090-022-10234-6

Petrović J, Savović J, Ranković D, Kuzmanović MM. Quantitative Analysis of Coal by Laser-Induced Breakdown Spectroscopy Using TEA CO2 Laser as the Excitation Source. in Plasma Chemistry and Plasma Processing. 2022;.
doi:10.1007/s11090-022-10234-6 .

Petrović, Jelena, Savović, Jelena, Ranković, Dragan, Kuzmanović, Miroslav M., "Quantitative Analysis of Coal by Laser-Induced Breakdown Spectroscopy Using TEA CO2 Laser as the Excitation Source" in Plasma Chemistry and Plasma Processing (2022),
https://doi.org/10.1007/s11090-022-10234-6 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Kuzmanović, Miroslav M.
AU  - Savović, Jelena
AU  - Ranković, Dragan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9972
AB  - The interaction of a Transversely Excited Atmospheric (TEA) CO2 laser with a polymer polymethyl methacrylate (PMMA) sample in a vacuum ambiance was studied. The main goal was to demonstrate the feasibility of laser-induced breakdown spectroscopy (LIBS) to detect hydrogen. The generation of plasma over the PMMA surface, using a low laser intensity of ∼ 48 MW/cm2 and fluence of ∼ 16.5 J/cm2, required the application of a metal sub-target. Besides hydrogen, the recorded spectra were dominated by atomic lines of carbon and oxygen and band emission of the C2 and CN molecules. The electron number density and temperature (ionic, vibrational, and rotational) were evaluated to characterize the laser-induced plasma. In addition, PMMA micro-damages (diameter ∼ 45 µm) created by a multipulse laser ablation could find potential applications in sensor technologies.
T2  - Applied Surface Science
T1  - TEA CO2 Laser – Polymethyl Methacrylate Interaction: LIBS Hydrogen Analysis
VL  - 572
SP  - 151424
DO  - 10.1016/j.apsusc.2021.151424
ER  - 

@article{
author = "Trtica, Milan and Kuzmanović, Miroslav M. and Savović, Jelena and Ranković, Dragan",
year = "2022",
abstract = "The interaction of a Transversely Excited Atmospheric (TEA) CO2 laser with a polymer polymethyl methacrylate (PMMA) sample in a vacuum ambiance was studied. The main goal was to demonstrate the feasibility of laser-induced breakdown spectroscopy (LIBS) to detect hydrogen. The generation of plasma over the PMMA surface, using a low laser intensity of ∼ 48 MW/cm2 and fluence of ∼ 16.5 J/cm2, required the application of a metal sub-target. Besides hydrogen, the recorded spectra were dominated by atomic lines of carbon and oxygen and band emission of the C2 and CN molecules. The electron number density and temperature (ionic, vibrational, and rotational) were evaluated to characterize the laser-induced plasma. In addition, PMMA micro-damages (diameter ∼ 45 µm) created by a multipulse laser ablation could find potential applications in sensor technologies.",
journal = "Applied Surface Science",
title = "TEA CO2 Laser – Polymethyl Methacrylate Interaction: LIBS Hydrogen Analysis",
volume = "572",
pages = "151424",
doi = "10.1016/j.apsusc.2021.151424"
}

Trtica, M., Kuzmanović, M. M., Savović, J.,& Ranković, D.. (2022). TEA CO2 Laser – Polymethyl Methacrylate Interaction: LIBS Hydrogen Analysis. in Applied Surface Science, 572, 151424.
https://doi.org/10.1016/j.apsusc.2021.151424

Trtica M, Kuzmanović MM, Savović J, Ranković D. TEA CO2 Laser – Polymethyl Methacrylate Interaction: LIBS Hydrogen Analysis. in Applied Surface Science. 2022;572:151424.
doi:10.1016/j.apsusc.2021.151424 .

Trtica, Milan, Kuzmanović, Miroslav M., Savović, Jelena, Ranković, Dragan, "TEA CO2 Laser – Polymethyl Methacrylate Interaction: LIBS Hydrogen Analysis" in Applied Surface Science, 572 (2022):151424,
https://doi.org/10.1016/j.apsusc.2021.151424 . .

TY  - JOUR
AU  - Kiris, Vasili
AU  - Savović, Jelena
AU  - Nevar, Alena
AU  - Kuzmanović, Miroslav M.
AU  - Nedelko, Mikhail
AU  - Ranković, Dragan
AU  - Tarasenko, Nikolai
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10059
AB  - The analytical potential of LIBS for the analysis of liquid solutions was evaluated using two experimental setups, one based on a TEA CO2 laser and the other in which Nd:YAG laser was used. Polytetrafluoroethylene (PTFE) was used as a substrate on which a 10 μL drop of analyte solutions with different concentrations of analyte elements, Be, Cr, Ni, Co, Pb, Tl, and V, were deposited and dried. The samples were deposited either directly on the PTFE or over the pre-deposited layer of copper oxide nanoparticles to study the influence of nanoparticles (NPs) on the ablation and plasma excitation. The obtained results imply that the presence of Cu oxide NPs does not significantly affect the analytical performance of LIBS based on TEA CO2 laser for analysis of solutions. At the same time, it was shown that plasma created by TEA CO2 laser radiation efficiently excited ablated material, making metal elements detectable in the sub-ppm concentration range. On the other hand, Cu oxide NPs significantly influence the formation and the analytical properties of plasma induced by Nd:YAG laser. Without the presence of NPs, the intensities of analyte lines were very low, unsuitable for spectrochemical analysis. At the optimal surface concentration of NPs, 0.36 mg/cm2, the intensity of analyte lines was increased more than ten times. Limits of detection of Be and Cr were 5.3 ppb and 33 ppb, with good linearity of curves of growth.
T2  - Spectrochimica Acta. Part B: Atomic Spectroscopy
T1  - Laser-induced breakdown spectroscopy analysis of water solutions deposited on PTFE surface: Influence of copper oxide nanoparticles and NELIBS effect
VL  - 187
SP  - 106333
DO  - 10.1016/j.sab.2021.106333
ER  - 

@article{
author = "Kiris, Vasili and Savović, Jelena and Nevar, Alena and Kuzmanović, Miroslav M. and Nedelko, Mikhail and Ranković, Dragan and Tarasenko, Nikolai",
year = "2022",
abstract = "The analytical potential of LIBS for the analysis of liquid solutions was evaluated using two experimental setups, one based on a TEA CO2 laser and the other in which Nd:YAG laser was used. Polytetrafluoroethylene (PTFE) was used as a substrate on which a 10 μL drop of analyte solutions with different concentrations of analyte elements, Be, Cr, Ni, Co, Pb, Tl, and V, were deposited and dried. The samples were deposited either directly on the PTFE or over the pre-deposited layer of copper oxide nanoparticles to study the influence of nanoparticles (NPs) on the ablation and plasma excitation. The obtained results imply that the presence of Cu oxide NPs does not significantly affect the analytical performance of LIBS based on TEA CO2 laser for analysis of solutions. At the same time, it was shown that plasma created by TEA CO2 laser radiation efficiently excited ablated material, making metal elements detectable in the sub-ppm concentration range. On the other hand, Cu oxide NPs significantly influence the formation and the analytical properties of plasma induced by Nd:YAG laser. Without the presence of NPs, the intensities of analyte lines were very low, unsuitable for spectrochemical analysis. At the optimal surface concentration of NPs, 0.36 mg/cm2, the intensity of analyte lines was increased more than ten times. Limits of detection of Be and Cr were 5.3 ppb and 33 ppb, with good linearity of curves of growth.",
journal = "Spectrochimica Acta. Part B: Atomic Spectroscopy",
title = "Laser-induced breakdown spectroscopy analysis of water solutions deposited on PTFE surface: Influence of copper oxide nanoparticles and NELIBS effect",
volume = "187",
pages = "106333",
doi = "10.1016/j.sab.2021.106333"
}

Kiris, V., Savović, J., Nevar, A., Kuzmanović, M. M., Nedelko, M., Ranković, D.,& Tarasenko, N.. (2022). Laser-induced breakdown spectroscopy analysis of water solutions deposited on PTFE surface: Influence of copper oxide nanoparticles and NELIBS effect. in Spectrochimica Acta. Part B: Atomic Spectroscopy, 187, 106333.
https://doi.org/10.1016/j.sab.2021.106333

Kiris V, Savović J, Nevar A, Kuzmanović MM, Nedelko M, Ranković D, Tarasenko N. Laser-induced breakdown spectroscopy analysis of water solutions deposited on PTFE surface: Influence of copper oxide nanoparticles and NELIBS effect. in Spectrochimica Acta. Part B: Atomic Spectroscopy. 2022;187:106333.
doi:10.1016/j.sab.2021.106333 .

Kiris, Vasili, Savović, Jelena, Nevar, Alena, Kuzmanović, Miroslav M., Nedelko, Mikhail, Ranković, Dragan, Tarasenko, Nikolai, "Laser-induced breakdown spectroscopy analysis of water solutions deposited on PTFE surface: Influence of copper oxide nanoparticles and NELIBS effect" in Spectrochimica Acta. Part B: Atomic Spectroscopy, 187 (2022):106333,
https://doi.org/10.1016/j.sab.2021.106333 . .

TY  - JOUR
AU  - Kuzmanović, Miroslav M.
AU  - Stancalie, Andrei
AU  - Milovanović, Dubravka S.
AU  - Staicu, Angela
AU  - Damjanović-Vasilić, Ljiljana S.
AU  - Ranković, Dragan
AU  - Savović, Jelena
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9644
AB  - The aim of this study was to demonstrate the potential of Laser-Induced Breakdown Spectroscopy (LIBS) in the analysis of pottery shards, which are commonly the most abundant artefacts recovered at archaeological sites. The analytical capability of LIBS in identification of elements characteristic to inorganic pigments used for decoration was assessed. Based on the specific elements detected in the LIBS spectra of glazes, correlations between the elemental composition of the glaze and the colours of the glazed surface were established. The results were in accordance with the previously reported Energy Dispersive X-ray Fluorescence (EDXRF) and Raman analyses of some of the samples, and with the presently performed XRF analysis. Two important parameters for plasma characterization, temperature and electron number density, were estimated from the spectral data. A potential use of LIBS for depth profiling was also investigated by analysing the silicon to aluminium intensity ratio as a function of the number of laser shots applied. Profilometry analysis of the damages created on the glazed surfaces by laser shots was used to estimate the average ablation depth and ablated mass.
T2  - Optics & Laser Technology
T1  - Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy
VL  - 134
SP  - 106599
DO  - 10.1016/j.optlastec.2020.106599
ER  - 

@article{
author = "Kuzmanović, Miroslav M. and Stancalie, Andrei and Milovanović, Dubravka S. and Staicu, Angela and Damjanović-Vasilić, Ljiljana S. and Ranković, Dragan and Savović, Jelena",
year = "2021",
abstract = "The aim of this study was to demonstrate the potential of Laser-Induced Breakdown Spectroscopy (LIBS) in the analysis of pottery shards, which are commonly the most abundant artefacts recovered at archaeological sites. The analytical capability of LIBS in identification of elements characteristic to inorganic pigments used for decoration was assessed. Based on the specific elements detected in the LIBS spectra of glazes, correlations between the elemental composition of the glaze and the colours of the glazed surface were established. The results were in accordance with the previously reported Energy Dispersive X-ray Fluorescence (EDXRF) and Raman analyses of some of the samples, and with the presently performed XRF analysis. Two important parameters for plasma characterization, temperature and electron number density, were estimated from the spectral data. A potential use of LIBS for depth profiling was also investigated by analysing the silicon to aluminium intensity ratio as a function of the number of laser shots applied. Profilometry analysis of the damages created on the glazed surfaces by laser shots was used to estimate the average ablation depth and ablated mass.",
journal = "Optics & Laser Technology",
title = "Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy",
volume = "134",
pages = "106599",
doi = "10.1016/j.optlastec.2020.106599"
}

Kuzmanović, M. M., Stancalie, A., Milovanović, D. S., Staicu, A., Damjanović-Vasilić, L. S., Ranković, D.,& Savović, J.. (2021). Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy. in Optics & Laser Technology, 134, 106599.
https://doi.org/10.1016/j.optlastec.2020.106599

Kuzmanović MM, Stancalie A, Milovanović DS, Staicu A, Damjanović-Vasilić LS, Ranković D, Savović J. Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy. in Optics & Laser Technology. 2021;134:106599.
doi:10.1016/j.optlastec.2020.106599 .

Kuzmanović, Miroslav M., Stancalie, Andrei, Milovanović, Dubravka S., Staicu, Angela, Damjanović-Vasilić, Ljiljana S., Ranković, Dragan, Savović, Jelena, "Analysis of lead-based archaeological pottery glazes by laser induced breakdown spectroscopy" in Optics & Laser Technology, 134 (2021):106599,
https://doi.org/10.1016/j.optlastec.2020.106599 . .

TY  - CONF
AU  - Nevar, A.
AU  - Nedelko, M.
AU  - Radomzev, A.
AU  - Tarasenko, N.
AU  - Savović, Jelena
AU  - Kuzmanović, Miroslav M.
AU  - Ranković, D.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10911
AB  - For elucidation a possibility to use molecular emission spectra in LIBS analysis of carbon containing materials time and space resolved spectra of laser ablation plasma from graphite were studied. Laser plasma was produced on a rotated graphite target by fundamental harmonic of YAG: Nd3+ laser (Lotis TII) in air at atmospheric pressure. The optical emission spectra were analyzed using a GSM850 Lotis TII monochromator/spectrograph equipped with a CCD detector. The atomic and molecular spectra in the region of emission of molecules C2 (λ = 516,52 nm) and CN (λ = 421,16 nm) were registered by photomultiplier placed behind the interference filter to record the intensity of the selected plasma emission line. The temporal and spatial characteristics of the plasma spectra with special attention to molecular carbon including molecules СN and С2 were analyzed. It was found that the time range of dominance of the C2 and CN emission is related to the stage of the plasma decay (10–20 μs after the action of the laser pulse, depending on the conditions for plasma creating). The atomic emission spectra of the plasma were used to estimate the concentration of electrons and the electron temperature of the plasma. The vibrational temperature of the carbon plasma was determined from the molecular spectrum of the radical СN ((∆ν = 0, -1). The plasma electron concentration and electron temperature as well as vibrational temperature were determined in different zones of the expanding plasma and at different values of laser power densities (2,2·108 ÷ 3,7·108 W/cm2 ) used in experiments. The electron temperature varied in the range 9700 – 10300 K, the electron concentration was estimated to be in the range from 0,8·1018 cm-3 to 8,0·1018 cm-3 , the vibrational temperature of the plasma was 4560 - 7350 K depending on the experimental conditions (laser power density, spatial zone of the plasma plume).
PB  - Belgrade : Institute of Physics Belgrade
C3  - PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
T1  - Time-spatial resolved LIBS of atomic and molecular carbon in laser ablation plasma
SP  - 135
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10911
ER  - 

@conference{
author = "Nevar, A. and Nedelko, M. and Radomzev, A. and Tarasenko, N. and Savović, Jelena and Kuzmanović, Miroslav M. and Ranković, D.",
year = "2021",
abstract = "For elucidation a possibility to use molecular emission spectra in LIBS analysis of carbon containing materials time and space resolved spectra of laser ablation plasma from graphite were studied. Laser plasma was produced on a rotated graphite target by fundamental harmonic of YAG: Nd3+ laser (Lotis TII) in air at atmospheric pressure. The optical emission spectra were analyzed using a GSM850 Lotis TII monochromator/spectrograph equipped with a CCD detector. The atomic and molecular spectra in the region of emission of molecules C2 (λ = 516,52 nm) and CN (λ = 421,16 nm) were registered by photomultiplier placed behind the interference filter to record the intensity of the selected plasma emission line. The temporal and spatial characteristics of the plasma spectra with special attention to molecular carbon including molecules СN and С2 were analyzed. It was found that the time range of dominance of the C2 and CN emission is related to the stage of the plasma decay (10–20 μs after the action of the laser pulse, depending on the conditions for plasma creating). The atomic emission spectra of the plasma were used to estimate the concentration of electrons and the electron temperature of the plasma. The vibrational temperature of the carbon plasma was determined from the molecular spectrum of the radical СN ((∆ν = 0, -1). The plasma electron concentration and electron temperature as well as vibrational temperature were determined in different zones of the expanding plasma and at different values of laser power densities (2,2·108 ÷ 3,7·108 W/cm2 ) used in experiments. The electron temperature varied in the range 9700 – 10300 K, the electron concentration was estimated to be in the range from 0,8·1018 cm-3 to 8,0·1018 cm-3 , the vibrational temperature of the plasma was 4560 - 7350 K depending on the experimental conditions (laser power density, spatial zone of the plasma plume).",
publisher = "Belgrade : Institute of Physics Belgrade",
journal = "PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade",
title = "Time-spatial resolved LIBS of atomic and molecular carbon in laser ablation plasma",
pages = "135",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10911"
}

Nevar, A., Nedelko, M., Radomzev, A., Tarasenko, N., Savović, J., Kuzmanović, M. M.,& Ranković, D.. (2021). Time-spatial resolved LIBS of atomic and molecular carbon in laser ablation plasma. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade
Belgrade : Institute of Physics Belgrade., 135.
https://hdl.handle.net/21.15107/rcub_vinar_10911

Nevar A, Nedelko M, Radomzev A, Tarasenko N, Savović J, Kuzmanović MM, Ranković D. Time-spatial resolved LIBS of atomic and molecular carbon in laser ablation plasma. in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade. 2021;:135.
https://hdl.handle.net/21.15107/rcub_vinar_10911 .

Nevar, A., Nedelko, M., Radomzev, A., Tarasenko, N., Savović, Jelena, Kuzmanović, Miroslav M., Ranković, D., "Time-spatial resolved LIBS of atomic and molecular carbon in laser ablation plasma" in PHOTONICA2021 : 8th International School and Conference on Photonics and HEMMAGINERO workshop : Abstracts of Tutorial, Keynote, Invited Lectures, Progress Reports and Contributed Papers; August 23-27, 2021; Belgrade (2021):135,
https://hdl.handle.net/21.15107/rcub_vinar_10911 .

TY  - JOUR
AU  - Ranđelović, Dragana
AU  - Jakovljević, Ksenija
AU  - Mišljenović, Tomica
AU  - Savović, Jelena
AU  - Kuzmanović, Miroslav M.
AU  - Mihailović, Nevena
AU  - Jovanović, Slobodan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9014
AB  - This study investigated invasive Ambrosia artemisiifolia from five localities with different levels of anthropogenic pollution in order to determine the potential for accumulation of trace metals and metaloids. Physical characteristics of the soil are presented, together with concentrations of As, B, Ba, Ca, Cd, Co, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Sb, Sr, and Zn in both plant and soil. The tested samples displayed considerable differences in element concentrations, depending on the level of anthropogenic activities, with the highest concentrations of elements observed in samples from Stolice and Piskanja, the sites with most intensive human influence. A trend of shoot accumulation can be observed in A. artemisiifolia, but without hyperaccumulation, along with lower root concentrations in almost all analyzed samples. This may pose an additional environmental risk, as accumulated elements can spread to other components of the ecosystem. While A. artemisiifolia acumulates a high and even toxic rate of B in shoots regardless of boron concentration in soil, there is a high correlation of Ba, Pb, and Zn concentrations in species shoots with their respective concentration in the soil. Successful colonization of both natural and anthropogenically polluted habitats indicates high tolerance of A. artemisiifolia, which complements its wide environmental amplitude.
T2  - Water, Air, and Soil Pollution
T1  - Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution
VL  - 231
IS  - 6
SP  - 272
DO  - 10.1007/s11270-020-04655-2
ER  - 

@article{
author = "Ranđelović, Dragana and Jakovljević, Ksenija and Mišljenović, Tomica and Savović, Jelena and Kuzmanović, Miroslav M. and Mihailović, Nevena and Jovanović, Slobodan",
year = "2020",
abstract = "This study investigated invasive Ambrosia artemisiifolia from five localities with different levels of anthropogenic pollution in order to determine the potential for accumulation of trace metals and metaloids. Physical characteristics of the soil are presented, together with concentrations of As, B, Ba, Ca, Cd, Co, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Sb, Sr, and Zn in both plant and soil. The tested samples displayed considerable differences in element concentrations, depending on the level of anthropogenic activities, with the highest concentrations of elements observed in samples from Stolice and Piskanja, the sites with most intensive human influence. A trend of shoot accumulation can be observed in A. artemisiifolia, but without hyperaccumulation, along with lower root concentrations in almost all analyzed samples. This may pose an additional environmental risk, as accumulated elements can spread to other components of the ecosystem. While A. artemisiifolia acumulates a high and even toxic rate of B in shoots regardless of boron concentration in soil, there is a high correlation of Ba, Pb, and Zn concentrations in species shoots with their respective concentration in the soil. Successful colonization of both natural and anthropogenically polluted habitats indicates high tolerance of A. artemisiifolia, which complements its wide environmental amplitude.",
journal = "Water, Air, and Soil Pollution",
title = "Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution",
volume = "231",
number = "6",
pages = "272",
doi = "10.1007/s11270-020-04655-2"
}

Ranđelović, D., Jakovljević, K., Mišljenović, T., Savović, J., Kuzmanović, M. M., Mihailović, N.,& Jovanović, S.. (2020). Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution. in Water, Air, and Soil Pollution, 231(6), 272.
https://doi.org/10.1007/s11270-020-04655-2

Ranđelović D, Jakovljević K, Mišljenović T, Savović J, Kuzmanović MM, Mihailović N, Jovanović S. Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution. in Water, Air, and Soil Pollution. 2020;231(6):272.
doi:10.1007/s11270-020-04655-2 .

Ranđelović, Dragana, Jakovljević, Ksenija, Mišljenović, Tomica, Savović, Jelena, Kuzmanović, Miroslav M., Mihailović, Nevena, Jovanović, Slobodan, "Accumulation of Potentially Toxic Elements in Invasive Ambrosia artemisiifolia on Sites with Different Levels of Anthropogenic Pollution" in Water, Air, and Soil Pollution, 231, no. 6 (2020):272,
https://doi.org/10.1007/s11270-020-04655-2 . .

TY  - JOUR
AU  - Kuzmanović, Miroslav M.
AU  - Ranković, Dragan
AU  - Trtica, Milan
AU  - Ciganović, Jovan
AU  - Petrović, Jelena
AU  - Savović, Jelena
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0584854719300849
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8204
AB  - Optical emission studies of graphite plasma induced by infrared (IR) Transversely Excited Atmospheric carbon dioxide (TEA CO2) laser pulses in ambient air at atmospheric pressure are reported. The plasma was induced at relatively low-irradiance, up to 40 MW cm−2, and the plasma emission was recorded using time-integrated LIBS measurements. The time profile of the 160 mJ laser pulse is composed of a short, 100 ns long initial spike, and a long 2 μs tail. About 60 mJ is contained in the initial pulse, and the 100-mJ tail contribution is favorable for extended plasma absorption that promotes creation of long-lasting highly-excited plasma. With laser pulse focused behind the target surface, recorded spectra consisted of intensive, sharp atomic and single charged ionic spectral lines of carbon, and trace elements, e.g. Ca, Cu, V, Si, and Ti. Good signal to background ratios obtained indicate potential application in the analysis of impurities in graphite, and also elemental analysis of other materials with high carbon content. The average electron number density was determined from Stark-broadened emission profile of C I 247.9 nm line, and the line intensity ratio of CII 250.9 nm/C I 247.9 nm line pair was used for estimation of ionization temperature. Depending on the applied fluence, electron density was in the range 2.6–4.8 × 1017 cm−3, and ionization temperature between 19,000 and 22,000 K. Beside line spectra, intensive and well-developed band spectra of diatomic molecules C2 (Swan system), and CN (violet system) were obtained. Pulse energy threshold for observation of molecular emission was 50 mJ. From the spectroscopic studies of the emission bands, the rotational and vibrational temperatures were estimated by comparing the experimental and simulated emission spectra. Vibrational and rotational temperatures deduced from Δν = 0 sequences of the Swan system of C2 were 3100 K and 3850 K, respectively. The most intense band of the CN violet system showed strong self-absorption and led to overestimated temperature values, Tvib = Trot = 4900 K. © 2019 Elsevier B.V.
T2  - Spectrochimica Acta. Part B: Atomic Spectroscopy
T1  - Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses
VL  - 157
SP  - 37
EP  - 46
DO  - 10.1016/j.sab.2019.05.006
ER  - 

@article{
author = "Kuzmanović, Miroslav M. and Ranković, Dragan and Trtica, Milan and Ciganović, Jovan and Petrović, Jelena and Savović, Jelena",
year = "2019",
abstract = "Optical emission studies of graphite plasma induced by infrared (IR) Transversely Excited Atmospheric carbon dioxide (TEA CO2) laser pulses in ambient air at atmospheric pressure are reported. The plasma was induced at relatively low-irradiance, up to 40 MW cm−2, and the plasma emission was recorded using time-integrated LIBS measurements. The time profile of the 160 mJ laser pulse is composed of a short, 100 ns long initial spike, and a long 2 μs tail. About 60 mJ is contained in the initial pulse, and the 100-mJ tail contribution is favorable for extended plasma absorption that promotes creation of long-lasting highly-excited plasma. With laser pulse focused behind the target surface, recorded spectra consisted of intensive, sharp atomic and single charged ionic spectral lines of carbon, and trace elements, e.g. Ca, Cu, V, Si, and Ti. Good signal to background ratios obtained indicate potential application in the analysis of impurities in graphite, and also elemental analysis of other materials with high carbon content. The average electron number density was determined from Stark-broadened emission profile of C I 247.9 nm line, and the line intensity ratio of CII 250.9 nm/C I 247.9 nm line pair was used for estimation of ionization temperature. Depending on the applied fluence, electron density was in the range 2.6–4.8 × 1017 cm−3, and ionization temperature between 19,000 and 22,000 K. Beside line spectra, intensive and well-developed band spectra of diatomic molecules C2 (Swan system), and CN (violet system) were obtained. Pulse energy threshold for observation of molecular emission was 50 mJ. From the spectroscopic studies of the emission bands, the rotational and vibrational temperatures were estimated by comparing the experimental and simulated emission spectra. Vibrational and rotational temperatures deduced from Δν = 0 sequences of the Swan system of C2 were 3100 K and 3850 K, respectively. The most intense band of the CN violet system showed strong self-absorption and led to overestimated temperature values, Tvib = Trot = 4900 K. © 2019 Elsevier B.V.",
journal = "Spectrochimica Acta. Part B: Atomic Spectroscopy",
title = "Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses",
volume = "157",
pages = "37-46",
doi = "10.1016/j.sab.2019.05.006"
}

Kuzmanović, M. M., Ranković, D., Trtica, M., Ciganović, J., Petrović, J.,& Savović, J.. (2019). Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses. in Spectrochimica Acta. Part B: Atomic Spectroscopy, 157, 37-46.
https://doi.org/10.1016/j.sab.2019.05.006

Kuzmanović MM, Ranković D, Trtica M, Ciganović J, Petrović J, Savović J. Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses. in Spectrochimica Acta. Part B: Atomic Spectroscopy. 2019;157:37-46.
doi:10.1016/j.sab.2019.05.006 .

Kuzmanović, Miroslav M., Ranković, Dragan, Trtica, Milan, Ciganović, Jovan, Petrović, Jelena, Savović, Jelena, "Optical emission of graphite plasma generated in ambient air using low-irradiance carbon dioxide laser pulses" in Spectrochimica Acta. Part B: Atomic Spectroscopy, 157 (2019):37-46,
https://doi.org/10.1016/j.sab.2019.05.006 . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Kuzmanović, Miroslav M.
AU  - Ciganović, Jovan
AU  - Ranković, Dragan
AU  - Trtica, Milan
AU  - Savović, Jelena
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8158
AB  - Time-integrated optical emission spectroscopy was applied for the analysis of emission spectra, and determination of electron densities and excitation temperatures of basalt plasma induced by 10.6 micron laser radiation. The plasma was studied in air, argon and carbon dioxide, under pressure of 10, 50, and 100 mbar. The plasma emission intensity was found to be strongly dependent on the nature of the ambient gas and its pressure. The highest emission intensities and signal to noise ratios were obtained in argon. Depending on the composition and pressure of the surrounding atmosphere, the values of plasma temperature varied between 14,400 K (air at 10 mbar) and 17,100 K (carbon dioxide at 100 mbar). Similarly, the electron number density varied between 3 × 1016 cm−3 (10 mbar air) and 1.6 × 1017 cm−3 (100 mbar CO2). The observed behavior was correlated with the properties of the studied gases, in particular, their mass, thermal conductivity and ionization energy, and the role of the ambient gas in controlling the efficiency of laser-target coupling, laser-plasma interaction and plasma shielding. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Plasma Chemistry and Plasma Processing
T1  - The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation
VL  - 39
IS  - 4
SP  - 985
EP  - 1000
DO  - 10.1007/s11090-019-09987-4
ER  - 

@article{
author = "Momčilović, Miloš and Živković, Sanja and Kuzmanović, Miroslav M. and Ciganović, Jovan and Ranković, Dragan and Trtica, Milan and Savović, Jelena",
year = "2019",
abstract = "Time-integrated optical emission spectroscopy was applied for the analysis of emission spectra, and determination of electron densities and excitation temperatures of basalt plasma induced by 10.6 micron laser radiation. The plasma was studied in air, argon and carbon dioxide, under pressure of 10, 50, and 100 mbar. The plasma emission intensity was found to be strongly dependent on the nature of the ambient gas and its pressure. The highest emission intensities and signal to noise ratios were obtained in argon. Depending on the composition and pressure of the surrounding atmosphere, the values of plasma temperature varied between 14,400 K (air at 10 mbar) and 17,100 K (carbon dioxide at 100 mbar). Similarly, the electron number density varied between 3 × 1016 cm−3 (10 mbar air) and 1.6 × 1017 cm−3 (100 mbar CO2). The observed behavior was correlated with the properties of the studied gases, in particular, their mass, thermal conductivity and ionization energy, and the role of the ambient gas in controlling the efficiency of laser-target coupling, laser-plasma interaction and plasma shielding. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Plasma Chemistry and Plasma Processing",
title = "The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation",
volume = "39",
number = "4",
pages = "985-1000",
doi = "10.1007/s11090-019-09987-4"
}

Momčilović, M., Živković, S., Kuzmanović, M. M., Ciganović, J., Ranković, D., Trtica, M.,& Savović, J.. (2019). The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation. in Plasma Chemistry and Plasma Processing, 39(4), 985-1000.
https://doi.org/10.1007/s11090-019-09987-4

Momčilović M, Živković S, Kuzmanović MM, Ciganović J, Ranković D, Trtica M, Savović J. The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation. in Plasma Chemistry and Plasma Processing. 2019;39(4):985-1000.
doi:10.1007/s11090-019-09987-4 .

Momčilović, Miloš, Živković, Sanja, Kuzmanović, Miroslav M., Ciganović, Jovan, Ranković, Dragan, Trtica, Milan, Savović, Jelena, "The Effect of Background Gas on the Excitation Temperature and Electron Number Density of Basalt Plasma Induced by 10.6 Micron Laser Radiation" in Plasma Chemistry and Plasma Processing, 39, no. 4 (2019):985-1000,
https://doi.org/10.1007/s11090-019-09987-4 . .

TY  - JOUR
AU  - Tarasenko, Nikolai V.
AU  - Kiris, Vasilii V.
AU  - Tarasenka, Natalie N.
AU  - Nevar, Alena A.
AU  - Kuzmanović, Miroslav M.
AU  - Ranković, Dragan
AU  - Savović, Jelena
AU  - Trtica, Milan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8374
AB  - Gold and copper oxide nanoparticles (NPs) were synthesized using pulsed Nd:YAG laser ablation in liquids (acetone and distilled water). The possibility of emission increasing from laser-induced plasma after the deposition of the prepared NPs on a glass surface promising for spectroscopic analysis of transparent samples was demonstrated.
T2  - International Journal of Nanoscience
T1  - Laser-Assisted Fabrication of Nanoparticles in Liquids and Their Application for Improving Analytical Performance of LIBS
VL  - 18
IS  - 03n04
SP  - 1940048
DO  - 10.1142/S0219581X19400489
ER  - 

@article{
author = "Tarasenko, Nikolai V. and Kiris, Vasilii V. and Tarasenka, Natalie N. and Nevar, Alena A. and Kuzmanović, Miroslav M. and Ranković, Dragan and Savović, Jelena and Trtica, Milan",
year = "2019",
abstract = "Gold and copper oxide nanoparticles (NPs) were synthesized using pulsed Nd:YAG laser ablation in liquids (acetone and distilled water). The possibility of emission increasing from laser-induced plasma after the deposition of the prepared NPs on a glass surface promising for spectroscopic analysis of transparent samples was demonstrated.",
journal = "International Journal of Nanoscience",
title = "Laser-Assisted Fabrication of Nanoparticles in Liquids and Their Application for Improving Analytical Performance of LIBS",
volume = "18",
number = "03n04",
pages = "1940048",
doi = "10.1142/S0219581X19400489"
}

Tarasenko, N. V., Kiris, V. V., Tarasenka, N. N., Nevar, A. A., Kuzmanović, M. M., Ranković, D., Savović, J.,& Trtica, M.. (2019). Laser-Assisted Fabrication of Nanoparticles in Liquids and Their Application for Improving Analytical Performance of LIBS. in International Journal of Nanoscience, 18(03n04), 1940048.
https://doi.org/10.1142/S0219581X19400489

Tarasenko NV, Kiris VV, Tarasenka NN, Nevar AA, Kuzmanović MM, Ranković D, Savović J, Trtica M. Laser-Assisted Fabrication of Nanoparticles in Liquids and Their Application for Improving Analytical Performance of LIBS. in International Journal of Nanoscience. 2019;18(03n04):1940048.
doi:10.1142/S0219581X19400489 .

Tarasenko, Nikolai V., Kiris, Vasilii V., Tarasenka, Natalie N., Nevar, Alena A., Kuzmanović, Miroslav M., Ranković, Dragan, Savović, Jelena, Trtica, Milan, "Laser-Assisted Fabrication of Nanoparticles in Liquids and Their Application for Improving Analytical Performance of LIBS" in International Journal of Nanoscience, 18, no. 03n04 (2019):1940048,
https://doi.org/10.1142/S0219581X19400489 . .

TY  - JOUR
AU  - Živković, Sanja
AU  - Savović, Jelena
AU  - Kuzmanović, Miroslav M.
AU  - Petrović, Jelena
AU  - Momčilović, Miloš
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1940
AB  - In this study, analytical capability of Laser Induced Breakdown Spectroscopy (LIBS) system based on Transversely Excited Atmospheric pressure (TEA) CO2 laser for determination of elemental composition of tea samples was demonstrated. Analysis of LIBS spectra indicated emission lines attributed to the elements Fe, Mg, Cu, Ca, Al, Mn, Ba, P, K and Sr. For quantitative analysis of Mn and Ba, a standard addition method was employed. Linear calibration curves with regression coefficients exceeding 0.95 were obtained. The accuracy of LIBS results was confirmed by inductively coupled plasma optical emission spectroscopy (ICP-OES) analysis. Calculated recoveries for Ba and Mn were 99.7 and 102.3%, respectively. The results presented confirm the suitability of the proposed LIBS setup for rapid quantitative analysis of tea, while at the same time simplifying the overall analytical procedure. This approach can be easily used as a helpful analytical tool for food quality and safety control. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Microchemical Journal
T1  - Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy
VL  - 137
SP  - 410
EP  - 417
DO  - 10.1016/j.microc.2017.11.020
ER  - 

@article{
author = "Živković, Sanja and Savović, Jelena and Kuzmanović, Miroslav M. and Petrović, Jelena and Momčilović, Miloš",
year = "2018",
abstract = "In this study, analytical capability of Laser Induced Breakdown Spectroscopy (LIBS) system based on Transversely Excited Atmospheric pressure (TEA) CO2 laser for determination of elemental composition of tea samples was demonstrated. Analysis of LIBS spectra indicated emission lines attributed to the elements Fe, Mg, Cu, Ca, Al, Mn, Ba, P, K and Sr. For quantitative analysis of Mn and Ba, a standard addition method was employed. Linear calibration curves with regression coefficients exceeding 0.95 were obtained. The accuracy of LIBS results was confirmed by inductively coupled plasma optical emission spectroscopy (ICP-OES) analysis. Calculated recoveries for Ba and Mn were 99.7 and 102.3%, respectively. The results presented confirm the suitability of the proposed LIBS setup for rapid quantitative analysis of tea, while at the same time simplifying the overall analytical procedure. This approach can be easily used as a helpful analytical tool for food quality and safety control. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Microchemical Journal",
title = "Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy",
volume = "137",
pages = "410-417",
doi = "10.1016/j.microc.2017.11.020"
}

Živković, S., Savović, J., Kuzmanović, M. M., Petrović, J.,& Momčilović, M.. (2018). Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy. in Microchemical Journal, 137, 410-417.
https://doi.org/10.1016/j.microc.2017.11.020

Živković S, Savović J, Kuzmanović MM, Petrović J, Momčilović M. Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy. in Microchemical Journal. 2018;137:410-417.
doi:10.1016/j.microc.2017.11.020 .

Živković, Sanja, Savović, Jelena, Kuzmanović, Miroslav M., Petrović, Jelena, Momčilović, Miloš, "Alternative analytical method for direct determination of Mn and Ba in peppermint tea based on laser induced breakdown spectroscopy" in Microchemical Journal, 137 (2018):410-417,
https://doi.org/10.1016/j.microc.2017.11.020 . .

TY  - JOUR
AU  - Trtica, Milan
AU  - Radak, Bojan
AU  - Milovanović, Dubravka S.
AU  - Kuzmanović, Miroslav M.
AU  - Savović, Jelena
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7809
AB  - Among numerous existing and developing techniques for the detection of air pollution, laser-based optical methods (LBM) are possibly the most promising ones. Unique sensing capabilities of LBM include high speed of analysis, high selectivity, sensitivity and accuracy, low detection limits, and remote detection. This paper gives a brief review of several laser-based systems for optical sensing of gas-phase chemical agents: laser intra-cavity, photoacoustic and laser-induced breakdown spectroscopy, and remote sensing based on differential absorption. For each method, a brief description of the principles of operation is given, and its analytical capabilities are outlined.
T2  - The European Physical Journal Plus
T1  - Laser-based optical techniques for the detection of chemical agents
VL  - 133
IS  - 7
SP  - 268
DO  - 10.1140/epjp/i2018-12145-4
ER  - 

@article{
author = "Trtica, Milan and Radak, Bojan and Milovanović, Dubravka S. and Kuzmanović, Miroslav M. and Savović, Jelena",
year = "2018",
abstract = "Among numerous existing and developing techniques for the detection of air pollution, laser-based optical methods (LBM) are possibly the most promising ones. Unique sensing capabilities of LBM include high speed of analysis, high selectivity, sensitivity and accuracy, low detection limits, and remote detection. This paper gives a brief review of several laser-based systems for optical sensing of gas-phase chemical agents: laser intra-cavity, photoacoustic and laser-induced breakdown spectroscopy, and remote sensing based on differential absorption. For each method, a brief description of the principles of operation is given, and its analytical capabilities are outlined.",
journal = "The European Physical Journal Plus",
title = "Laser-based optical techniques for the detection of chemical agents",
volume = "133",
number = "7",
pages = "268",
doi = "10.1140/epjp/i2018-12145-4"
}

Trtica, M., Radak, B., Milovanović, D. S., Kuzmanović, M. M.,& Savović, J.. (2018). Laser-based optical techniques for the detection of chemical agents. in The European Physical Journal Plus, 133(7), 268.
https://doi.org/10.1140/epjp/i2018-12145-4

Trtica M, Radak B, Milovanović DS, Kuzmanović MM, Savović J. Laser-based optical techniques for the detection of chemical agents. in The European Physical Journal Plus. 2018;133(7):268.
doi:10.1140/epjp/i2018-12145-4 .

Trtica, Milan, Radak, Bojan, Milovanović, Dubravka S., Kuzmanović, Miroslav M., Savović, Jelena, "Laser-based optical techniques for the detection of chemical agents" in The European Physical Journal Plus, 133, no. 7 (2018):268,
https://doi.org/10.1140/epjp/i2018-12145-4 . .

TY  - JOUR
AU  - Savović, Jelena
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Stancalie, Andrei
AU  - Trtica, Milan
AU  - Kuzmanović, Miroslav M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1638
AB  - We present a study of the plasma generated by transversely excited atmospheric (TEA) CO2 laser irradiation of a basalt sample. The plasma was induced in air at atmospheric pressure. The same sample was also analyzed using a commercial LIBS system based on Nd:YAG laser and time-gated detection. The main plasma parameters, temperature, and electron number density were determined and analytical capabilities of the two systems compared. Despite differences in laser wavelength, pulse duration, applied fluence, and signal detection scheme, the two systems are comparable in terms of element detectability and limits of detection. In both cases, all elements usually present in geological samples were identified. The estimated limits of detection for most elements were below 100 ppm, while for Cu, Cr, and Sr they were around or below 10 ppm. The obtained results led to the conclusion that simple, cost- effective TEA CO2 LIBS system can find applications for geological explorations.
T2  - Journal of Chemistry
T1  - LIBS Analysis of Geomaterials: Comparative Study of Basalt Plasma Induced by TEA CO2 and Nd:YAG Laser in Air at Atmospheric Pressure
DO  - 10.1155/2017/9513438
ER  - 

@article{
author = "Savović, Jelena and Momčilović, Miloš and Živković, Sanja and Stancalie, Andrei and Trtica, Milan and Kuzmanović, Miroslav M.",
year = "2017",
abstract = "We present a study of the plasma generated by transversely excited atmospheric (TEA) CO2 laser irradiation of a basalt sample. The plasma was induced in air at atmospheric pressure. The same sample was also analyzed using a commercial LIBS system based on Nd:YAG laser and time-gated detection. The main plasma parameters, temperature, and electron number density were determined and analytical capabilities of the two systems compared. Despite differences in laser wavelength, pulse duration, applied fluence, and signal detection scheme, the two systems are comparable in terms of element detectability and limits of detection. In both cases, all elements usually present in geological samples were identified. The estimated limits of detection for most elements were below 100 ppm, while for Cu, Cr, and Sr they were around or below 10 ppm. The obtained results led to the conclusion that simple, cost- effective TEA CO2 LIBS system can find applications for geological explorations.",
journal = "Journal of Chemistry",
title = "LIBS Analysis of Geomaterials: Comparative Study of Basalt Plasma Induced by TEA CO2 and Nd:YAG Laser in Air at Atmospheric Pressure",
doi = "10.1155/2017/9513438"
}

Savović, J., Momčilović, M., Živković, S., Stancalie, A., Trtica, M.,& Kuzmanović, M. M.. (2017). LIBS Analysis of Geomaterials: Comparative Study of Basalt Plasma Induced by TEA CO2 and Nd:YAG Laser in Air at Atmospheric Pressure. in Journal of Chemistry.
https://doi.org/10.1155/2017/9513438

Savović J, Momčilović M, Živković S, Stancalie A, Trtica M, Kuzmanović MM. LIBS Analysis of Geomaterials: Comparative Study of Basalt Plasma Induced by TEA CO2 and Nd:YAG Laser in Air at Atmospheric Pressure. in Journal of Chemistry. 2017;.
doi:10.1155/2017/9513438 .

Savović, Jelena, Momčilović, Miloš, Živković, Sanja, Stancalie, Andrei, Trtica, Milan, Kuzmanović, Miroslav M., "LIBS Analysis of Geomaterials: Comparative Study of Basalt Plasma Induced by TEA CO2 and Nd:YAG Laser in Air at Atmospheric Pressure" in Journal of Chemistry (2017),
https://doi.org/10.1155/2017/9513438 . .

TY  - JOUR
AU  - Savović, Jelena
AU  - Živković, Sanja
AU  - Momčilović, Miloš
AU  - Trtica, Milan
AU  - Stoiljković, Milovan
AU  - Kuzmanović, Miroslav M.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1845
AB  - The analytical capability of laser-produced plasma for the analysis of low alloying elements in cast iron samples has been investigated. The plasma was induced by irradiation of a sample in air at atmospheric pressure using an infrared CO2 laser. Emission spectra were recorded by time-integrated spatially-resolved measurement technique. A set of ten cast iron samples in a powder or particulate form were provided by BAM (Bundesanstalt fur Material Forschung und Prufung, Deutschland), seven of which were used for calibration, and three were treated as unknowns. Linear calibration curves were obtained for copper, chromium, and nickel, with correlation coefficients above 0.99. Precision and accuracy of the LIBS method was evaluated and compared to those obtained by the inductively coupled plasma (ICP) analysis of the same samples. Detection limits for Cu, Cr and Ni were close to those reported in the literature for other comparable iron-based alloys obtained using different LIBS systems. Analytical figures of merit of the studied LIBS system may be considered as satisfying, especially in the light of other advantages of the method, like cost effective and fast analysis with no sample preparation, and with a possibility for real-time on-site analysis.
T2  - Journal of the Serbian Chemical Society
T1  - Determination of low alloying elements concentrations in cast iron by laser induced breakdown spectroscopy based on TEA CO2 laser system
VL  - 82
IS  - 10
SP  - 1135
EP  - 1145
DO  - 10.2298/JSC170303073S
ER  - 

@article{
author = "Savović, Jelena and Živković, Sanja and Momčilović, Miloš and Trtica, Milan and Stoiljković, Milovan and Kuzmanović, Miroslav M.",
year = "2017",
abstract = "The analytical capability of laser-produced plasma for the analysis of low alloying elements in cast iron samples has been investigated. The plasma was induced by irradiation of a sample in air at atmospheric pressure using an infrared CO2 laser. Emission spectra were recorded by time-integrated spatially-resolved measurement technique. A set of ten cast iron samples in a powder or particulate form were provided by BAM (Bundesanstalt fur Material Forschung und Prufung, Deutschland), seven of which were used for calibration, and three were treated as unknowns. Linear calibration curves were obtained for copper, chromium, and nickel, with correlation coefficients above 0.99. Precision and accuracy of the LIBS method was evaluated and compared to those obtained by the inductively coupled plasma (ICP) analysis of the same samples. Detection limits for Cu, Cr and Ni were close to those reported in the literature for other comparable iron-based alloys obtained using different LIBS systems. Analytical figures of merit of the studied LIBS system may be considered as satisfying, especially in the light of other advantages of the method, like cost effective and fast analysis with no sample preparation, and with a possibility for real-time on-site analysis.",
journal = "Journal of the Serbian Chemical Society",
title = "Determination of low alloying elements concentrations in cast iron by laser induced breakdown spectroscopy based on TEA CO2 laser system",
volume = "82",
number = "10",
pages = "1135-1145",
doi = "10.2298/JSC170303073S"
}

Savović, J., Živković, S., Momčilović, M., Trtica, M., Stoiljković, M.,& Kuzmanović, M. M.. (2017). Determination of low alloying elements concentrations in cast iron by laser induced breakdown spectroscopy based on TEA CO2 laser system. in Journal of the Serbian Chemical Society, 82(10), 1135-1145.
https://doi.org/10.2298/JSC170303073S

Savović J, Živković S, Momčilović M, Trtica M, Stoiljković M, Kuzmanović MM. Determination of low alloying elements concentrations in cast iron by laser induced breakdown spectroscopy based on TEA CO2 laser system. in Journal of the Serbian Chemical Society. 2017;82(10):1135-1145.
doi:10.2298/JSC170303073S .

Savović, Jelena, Živković, Sanja, Momčilović, Miloš, Trtica, Milan, Stoiljković, Milovan, Kuzmanović, Miroslav M., "Determination of low alloying elements concentrations in cast iron by laser induced breakdown spectroscopy based on TEA CO2 laser system" in Journal of the Serbian Chemical Society, 82, no. 10 (2017):1135-1145,
https://doi.org/10.2298/JSC170303073S . .

TY  - CONF
AU  - Savović, Jelena
AU  - Živković, Sanja
AU  - Momčilović, Miloš
AU  - Trtica, Milan
AU  - Stoiljković, Milovan
AU  - Kuzmanović, Miroslav M.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9168
AB  - This  paper  gives  an  overview  of  analytical  capabilities  of  the  laser  induced breakdown  spectroscopy  (LIBS)  system,  based  on  Transversely-Excited Atmospheric  pressure  (TEA)  CO2laser,  and  time-integrated,  spatially-resolved  detection,  for  the  analysis  of  solid  materials.  The  developed  LIBS system  is  unique,  and  differs  from  the  commonly  used  systems  in  two respects.  The  first  one  is  the  laser  used  as  an  energy  source  for  plasma generation,  and  the  second  one  is  the  applied  non-gated  detection  scheme. Various   types   of   materials   were   analyzed,   from   metals   to   biological samples, under different experimental conditions. The obtained results were critically    evaluated    and    compared    to    the    results    obtained    using commercially  available  LIBS  that  comprises  Nd:YAG  laser  and  time-gated detection.It was concluded that when it comes to detectability, precision and sensitivity,  this  simple  and  cost  effective  LIBS  system  may  be  regarded highly competitive to standard LIBS systems.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
T1  - The analytical capability of laser induced breakdown spectroscopy (LIBS) based on tea CO2 laser system
SP  - B-01-SL
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9168
ER  - 

@conference{
author = "Savović, Jelena and Živković, Sanja and Momčilović, Miloš and Trtica, Milan and Stoiljković, Milovan and Kuzmanović, Miroslav M.",
year = "2016",
abstract = "This  paper  gives  an  overview  of  analytical  capabilities  of  the  laser  induced breakdown  spectroscopy  (LIBS)  system,  based  on  Transversely-Excited Atmospheric  pressure  (TEA)  CO2laser,  and  time-integrated,  spatially-resolved  detection,  for  the  analysis  of  solid  materials.  The  developed  LIBS system  is  unique,  and  differs  from  the  commonly  used  systems  in  two respects.  The  first  one  is  the  laser  used  as  an  energy  source  for  plasma generation,  and  the  second  one  is  the  applied  non-gated  detection  scheme. Various   types   of   materials   were   analyzed,   from   metals   to   biological samples, under different experimental conditions. The obtained results were critically    evaluated    and    compared    to    the    results    obtained    using commercially  available  LIBS  that  comprises  Nd:YAG  laser  and  time-gated detection.It was concluded that when it comes to detectability, precision and sensitivity,  this  simple  and  cost  effective  LIBS  system  may  be  regarded highly competitive to standard LIBS systems.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry",
title = "The analytical capability of laser induced breakdown spectroscopy (LIBS) based on tea CO2 laser system",
pages = "B-01-SL",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9168"
}

Savović, J., Živković, S., Momčilović, M., Trtica, M., Stoiljković, M.,& Kuzmanović, M. M.. (2016). The analytical capability of laser induced breakdown spectroscopy (LIBS) based on tea CO2 laser system. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., B-01-SL.
https://hdl.handle.net/21.15107/rcub_vinar_9168

Savović J, Živković S, Momčilović M, Trtica M, Stoiljković M, Kuzmanović MM. The analytical capability of laser induced breakdown spectroscopy (LIBS) based on tea CO2 laser system. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry. 2016;:B-01-SL.
https://hdl.handle.net/21.15107/rcub_vinar_9168 .

Savović, Jelena, Živković, Sanja, Momčilović, Miloš, Trtica, Milan, Stoiljković, Milovan, Kuzmanović, Miroslav M., "The analytical capability of laser induced breakdown spectroscopy (LIBS) based on tea CO2 laser system" in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry (2016):B-01-SL,
https://hdl.handle.net/21.15107/rcub_vinar_9168 .

TY  - JOUR
AU  - Savović, Jelena
AU  - Stoiljković, Milovan
AU  - Kuzmanović, Miroslav M.
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Ranković, Dragan
AU  - Živković, Sanja
AU  - Trtica, Milan
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1013
AB  - The present work studies the possibility of using pulsed Transversely Excited Atmospheric (TEA) carbon dioxide laser as an energy source for laser-induced breakdown spectroscopy (LIBS) analysis of rocks under simulated Martian atmospheric conditions. Irradiation of a basaltic rock sample with the laser intensity of 56 MW cm(-2), in carbon-dioxide gas at a pressure of 9 mbar, created target plasma with favorable conditions for excitation of all elements usually found in geological samples. Detection limits of minor constituents (Ba, Cr, Cu, Mn, Ni, Sr, V, and Zr) were in the 3 ppm-30 ppm range depending on the element. The precision varied between 5% and 25% for concentration levels of 1% to 10 ppm, respectively. Generally, the proposed relatively simple TEA CO2 laser-LIBS system provides good sensitivity for geological studies under reduced CO2 pressure. (C) 2016 Elsevier B.V. All rights reserved.
PB  - Elsevier
T2  - Spectrochimica Acta. Part B: Atomic Spectroscopy
T1  - The feasibility of TEA CO2 laser-induced plasma for spectrochemical analysis of geological samples in simulated Martian conditions
VL  - 118
SP  - 127
EP  - 136
DO  - 10.1016/j.sab.2016.02.020
ER  - 

@article{
author = "Savović, Jelena and Stoiljković, Milovan and Kuzmanović, Miroslav M. and Momčilović, Miloš and Ciganović, Jovan and Ranković, Dragan and Živković, Sanja and Trtica, Milan",
year = "2016",
abstract = "The present work studies the possibility of using pulsed Transversely Excited Atmospheric (TEA) carbon dioxide laser as an energy source for laser-induced breakdown spectroscopy (LIBS) analysis of rocks under simulated Martian atmospheric conditions. Irradiation of a basaltic rock sample with the laser intensity of 56 MW cm(-2), in carbon-dioxide gas at a pressure of 9 mbar, created target plasma with favorable conditions for excitation of all elements usually found in geological samples. Detection limits of minor constituents (Ba, Cr, Cu, Mn, Ni, Sr, V, and Zr) were in the 3 ppm-30 ppm range depending on the element. The precision varied between 5% and 25% for concentration levels of 1% to 10 ppm, respectively. Generally, the proposed relatively simple TEA CO2 laser-LIBS system provides good sensitivity for geological studies under reduced CO2 pressure. (C) 2016 Elsevier B.V. All rights reserved.",
publisher = "Elsevier",
journal = "Spectrochimica Acta. Part B: Atomic Spectroscopy",
title = "The feasibility of TEA CO2 laser-induced plasma for spectrochemical analysis of geological samples in simulated Martian conditions",
volume = "118",
pages = "127-136",
doi = "10.1016/j.sab.2016.02.020"
}

Savović, J., Stoiljković, M., Kuzmanović, M. M., Momčilović, M., Ciganović, J., Ranković, D., Živković, S.,& Trtica, M.. (2016). The feasibility of TEA CO2 laser-induced plasma for spectrochemical analysis of geological samples in simulated Martian conditions. in Spectrochimica Acta. Part B: Atomic Spectroscopy
Elsevier., 118, 127-136.
https://doi.org/10.1016/j.sab.2016.02.020

Savović J, Stoiljković M, Kuzmanović MM, Momčilović M, Ciganović J, Ranković D, Živković S, Trtica M. The feasibility of TEA CO2 laser-induced plasma for spectrochemical analysis of geological samples in simulated Martian conditions. in Spectrochimica Acta. Part B: Atomic Spectroscopy. 2016;118:127-136.
doi:10.1016/j.sab.2016.02.020 .

Savović, Jelena, Stoiljković, Milovan, Kuzmanović, Miroslav M., Momčilović, Miloš, Ciganović, Jovan, Ranković, Dragan, Živković, Sanja, Trtica, Milan, "The feasibility of TEA CO2 laser-induced plasma for spectrochemical analysis of geological samples in simulated Martian conditions" in Spectrochimica Acta. Part B: Atomic Spectroscopy, 118 (2016):127-136,
https://doi.org/10.1016/j.sab.2016.02.020 . .

TY  - JOUR
AU  - Ciganović, Jovan
AU  - Živković, Sanja
AU  - Momčilović, Miloš
AU  - Savović, Jelena
AU  - Kuzmanović, Miroslav M.
AU  - Stoiljković, Milovan
AU  - Trtica, Milan
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/905
AB  - Interaction of a TEA CO2 laser with a titanium implant in vacuum (air pressure 0.1 mbar) was studied. The laser operates at 10: 6 mu m with pulse duration of 100 ns (FWHM). The surface alternations were studied at the moderate laser beam energy density/fluence of 52 J/cm(2). The energy absorbed from the TEA CO2 laser beam was partially converted to thermal energy, which generated a series of effects such as melting, vaporization of the molten material, shock waves, etc. The following titanium implant surface changes and phenomena were observed: (1) creation of superficial damage which takes crater-shaped form at a higher number of accumulated laser pulses. Maximal depth of the damage was 9 mu m for 500 laser pulses. The damage cross-section had a conical form; (2) melt pools, inside the damage region, especially prominent for higher number of accumulated pulses; (3) preservation of chemical surface composition in central, and changes at the peripheral region, and (4) occurrence of plasma in front of the implant. The results have shown that under the applied experimental conditions, TEA CO2 laser can effectively be applied for enhancing the titanium implant roughness and creation of surface chemical changes. The appearance of plasma in front of the implant offers a sterilizing effect, facilitating contaminant-free conditions.
PB  - Springer
T2  - Optical and Quantum Electronics
T1  - Laser-induced features at titanium implant surface in vacuum ambience
VL  - 48
IS  - 2
DO  - 10.1007/s11082-015-0369-x
ER  - 

@article{
author = "Ciganović, Jovan and Živković, Sanja and Momčilović, Miloš and Savović, Jelena and Kuzmanović, Miroslav M. and Stoiljković, Milovan and Trtica, Milan",
year = "2016",
abstract = "Interaction of a TEA CO2 laser with a titanium implant in vacuum (air pressure 0.1 mbar) was studied. The laser operates at 10: 6 mu m with pulse duration of 100 ns (FWHM). The surface alternations were studied at the moderate laser beam energy density/fluence of 52 J/cm(2). The energy absorbed from the TEA CO2 laser beam was partially converted to thermal energy, which generated a series of effects such as melting, vaporization of the molten material, shock waves, etc. The following titanium implant surface changes and phenomena were observed: (1) creation of superficial damage which takes crater-shaped form at a higher number of accumulated laser pulses. Maximal depth of the damage was 9 mu m for 500 laser pulses. The damage cross-section had a conical form; (2) melt pools, inside the damage region, especially prominent for higher number of accumulated pulses; (3) preservation of chemical surface composition in central, and changes at the peripheral region, and (4) occurrence of plasma in front of the implant. The results have shown that under the applied experimental conditions, TEA CO2 laser can effectively be applied for enhancing the titanium implant roughness and creation of surface chemical changes. The appearance of plasma in front of the implant offers a sterilizing effect, facilitating contaminant-free conditions.",
publisher = "Springer",
journal = "Optical and Quantum Electronics",
title = "Laser-induced features at titanium implant surface in vacuum ambience",
volume = "48",
number = "2",
doi = "10.1007/s11082-015-0369-x"
}

Ciganović, J., Živković, S., Momčilović, M., Savović, J., Kuzmanović, M. M., Stoiljković, M.,& Trtica, M.. (2016). Laser-induced features at titanium implant surface in vacuum ambience. in Optical and Quantum Electronics
Springer., 48(2).
https://doi.org/10.1007/s11082-015-0369-x

Ciganović J, Živković S, Momčilović M, Savović J, Kuzmanović MM, Stoiljković M, Trtica M. Laser-induced features at titanium implant surface in vacuum ambience. in Optical and Quantum Electronics. 2016;48(2).
doi:10.1007/s11082-015-0369-x .

Ciganović, Jovan, Živković, Sanja, Momčilović, Miloš, Savović, Jelena, Kuzmanović, Miroslav M., Stoiljković, Milovan, Trtica, Milan, "Laser-induced features at titanium implant surface in vacuum ambience" in Optical and Quantum Electronics, 48, no. 2 (2016),
https://doi.org/10.1007/s11082-015-0369-x . .

TY  - CONF
AU  - Ranković, Dragan
AU  - Kuzmanović, Miroslav M.
AU  - Savović, Jelena
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9170
AB  - The studied plasma source was a wall stabilized directcurrent arc burning in argon    at    atmospheric    pressure, originally    designed    for    elemental spectrochemical  analysis.The  influence  of oxygenaddition  (1 -20  %)  on the  electron  density  of  mixed  gas  plasmawas investigated  for  two  initial plasma  compositions,  i.e.argon  gas  with  water  aerosol  and and  argon  with water  aerosol  containing  0.5  %  KCl.  The  electron  number  densitieswerecalculated  from  themeasured Stark profiles  of  Hβspectral  line. The  results have  shown  that the  addition  of  oxygenhas  weak  influence  on  electron number density  in  the  studied  central  plasma  zones.  Similar  trends  were observed  regardless  of  the  presence  or  absence  of  easily  ionized  element (potassium).
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
T1  - The electron number density of argon-oxygen atmospheric pressure plasma
SP  - 147
EP  - 150
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9170
ER  - 

@conference{
author = "Ranković, Dragan and Kuzmanović, Miroslav M. and Savović, Jelena",
year = "2016",
abstract = "The studied plasma source was a wall stabilized directcurrent arc burning in argon    at    atmospheric    pressure, originally    designed    for    elemental spectrochemical  analysis.The  influence  of oxygenaddition  (1 -20  %)  on the  electron  density  of  mixed  gas  plasmawas investigated  for  two  initial plasma  compositions,  i.e.argon  gas  with  water  aerosol  and and  argon  with water  aerosol  containing  0.5  %  KCl.  The  electron  number  densitieswerecalculated  from  themeasured Stark profiles  of  Hβspectral  line. The  results have  shown  that the  addition  of  oxygenhas  weak  influence  on  electron number density  in  the  studied  central  plasma  zones.  Similar  trends  were observed  regardless  of  the  presence  or  absence  of  easily  ionized  element (potassium).",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry",
title = "The electron number density of argon-oxygen atmospheric pressure plasma",
pages = "147-150",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9170"
}

Ranković, D., Kuzmanović, M. M.,& Savović, J.. (2016). The electron number density of argon-oxygen atmospheric pressure plasma. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., 147-150.
https://hdl.handle.net/21.15107/rcub_vinar_9170

Ranković D, Kuzmanović MM, Savović J. The electron number density of argon-oxygen atmospheric pressure plasma. in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry. 2016;:147-150.
https://hdl.handle.net/21.15107/rcub_vinar_9170 .

Ranković, Dragan, Kuzmanović, Miroslav M., Savović, Jelena, "The electron number density of argon-oxygen atmospheric pressure plasma" in Physical chemistry 2016 : 13th international conference on fundamental and applied aspects of physical chemistry (2016):147-150,
https://hdl.handle.net/21.15107/rcub_vinar_9170 .

TY  - CONF
AU  - Ciganović, Jovan
AU  - Živković, Sanja
AU  - Momčilović, Miloš
AU  - Savović, Jelena
AU  - Kuzmanović, Miroslav M.
AU  - Stoiljković, Milovan
AU  - Milovanović, Dubravka
AU  - Trtica, Milan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12007
AB  - Nowadays, titanium and its alloys have numerous applications, e.g., in industrial processes, aerospace engineering and bio-medicine. Due to its good mechanical and chemical characteristics, including corrosion resistivity, relatively low density, as well as biocompatibility, of special importance is the use of titanium as implant material [1]. For bio-applications of titanium, optimal surface topography is of prime importance. In spite of that, laser generated modifications of Ti-surface in a controlled atmosphere have been only sporadically studied [2], while data regarding modifications induced under reduced air pressure are lacking. The present work studies the interaction of TEA CO2 laser with Ti target, under reduced air pressure of 0.1 mbar. The influence of the laser irradiances (ranging from 40-70 MWcm-2), and the number of applied laser pulses (10, 50, 100, 200, 500 and 1000) on surface morphology and plasma parameters of titanium have been investigated. In summary, the observed phenomena leading to surface modifications may be described as follows: (i) Creation of craters with conically cross-section and maximal depth of ~ 4 μm (after 10 pulses) up to ~ 20 μm (after 1000 pulses); (ii) Resolidification of droplets in the periphery region (hydrodynamic effects); (iii) Creation of plasma in front of the target. In order to correlate the plasma parameters with the surface modification time-integrated space-resolved laser induced plasma spectroscopy (TISR-LIPS) [3] has also been performed. Spectral lines of Ti I and Ti II were used for plasma diagnostics. The presence of plasma strongly affects the ablation process and plays a key role for surface modification of the irradiated Ti target.
PB  - Belgrade : Vinča Institute of Nuclear Sciences
C3  - PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade
T1  - Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience
SP  - 99
EP  - 100
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12007
ER  - 

@conference{
author = "Ciganović, Jovan and Živković, Sanja and Momčilović, Miloš and Savović, Jelena and Kuzmanović, Miroslav M. and Stoiljković, Milovan and Milovanović, Dubravka and Trtica, Milan",
year = "2015",
abstract = "Nowadays, titanium and its alloys have numerous applications, e.g., in industrial processes, aerospace engineering and bio-medicine. Due to its good mechanical and chemical characteristics, including corrosion resistivity, relatively low density, as well as biocompatibility, of special importance is the use of titanium as implant material [1]. For bio-applications of titanium, optimal surface topography is of prime importance. In spite of that, laser generated modifications of Ti-surface in a controlled atmosphere have been only sporadically studied [2], while data regarding modifications induced under reduced air pressure are lacking. The present work studies the interaction of TEA CO2 laser with Ti target, under reduced air pressure of 0.1 mbar. The influence of the laser irradiances (ranging from 40-70 MWcm-2), and the number of applied laser pulses (10, 50, 100, 200, 500 and 1000) on surface morphology and plasma parameters of titanium have been investigated. In summary, the observed phenomena leading to surface modifications may be described as follows: (i) Creation of craters with conically cross-section and maximal depth of ~ 4 μm (after 10 pulses) up to ~ 20 μm (after 1000 pulses); (ii) Resolidification of droplets in the periphery region (hydrodynamic effects); (iii) Creation of plasma in front of the target. In order to correlate the plasma parameters with the surface modification time-integrated space-resolved laser induced plasma spectroscopy (TISR-LIPS) [3] has also been performed. Spectral lines of Ti I and Ti II were used for plasma diagnostics. The presence of plasma strongly affects the ablation process and plays a key role for surface modification of the irradiated Ti target.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences",
journal = "PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade",
title = "Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience",
pages = "99-100",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12007"
}

Ciganović, J., Živković, S., Momčilović, M., Savović, J., Kuzmanović, M. M., Stoiljković, M., Milovanović, D.,& Trtica, M.. (2015). Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience. in PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade
Belgrade : Vinča Institute of Nuclear Sciences., 99-100.
https://hdl.handle.net/21.15107/rcub_vinar_12007

Ciganović J, Živković S, Momčilović M, Savović J, Kuzmanović MM, Stoiljković M, Milovanović D, Trtica M. Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience. in PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade. 2015;:99-100.
https://hdl.handle.net/21.15107/rcub_vinar_12007 .

Ciganović, Jovan, Živković, Sanja, Momčilović, Miloš, Savović, Jelena, Kuzmanović, Miroslav M., Stoiljković, Milovan, Milovanović, Dubravka, Trtica, Milan, "Laser-Induced Features at Titanium Implant Surface in Vacuum Ambience" in PHOTONICA2015 : 5th International School and Conference on Photonics and COST actions: MP1204, BM1205 and MP1205 : book of abstracts; August 24-28, 2015; Belgrade (2015):99-100,
https://hdl.handle.net/21.15107/rcub_vinar_12007 .

TY  - CONF
AU  - Trtica, Milan
AU  - Savović, Jelena
AU  - Stoiljković, Milovan
AU  - Kuzmanović, Miroslav M.
AU  - Momčilović, Miloš
AU  - Ciganović, Jovan
AU  - Živković, Sanja
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7093
AB  - A short overview of Laser Induced Breakdown Spectroscopy (LIBS) with emphasis on the new trends is presented. Nowadays, due to unique features of this technique, LIBS has found applications in a great variety of fields. Achievements in the application of LIBS in nuclear area, for hazardous materials detection and in geology were considered. Also, some results recently obtained at VINCA Institute, with LIBS system based on transversely excited atmospheric (TEA) CO2 laser, are presented. Future investigations of LIBS will be oriented toward further improvement of the analytical performance of this technique, as well as on finding new application fields.
T1  - Laser-Induced Breakdown Spectroscopy (LIBS): Specific Applications
VL  - 9810
DO  - 10.1117/12.2228621
ER  - 

@conference{
author = "Trtica, Milan and Savović, Jelena and Stoiljković, Milovan and Kuzmanović, Miroslav M. and Momčilović, Miloš and Ciganović, Jovan and Živković, Sanja",
year = "2015",
abstract = "A short overview of Laser Induced Breakdown Spectroscopy (LIBS) with emphasis on the new trends is presented. Nowadays, due to unique features of this technique, LIBS has found applications in a great variety of fields. Achievements in the application of LIBS in nuclear area, for hazardous materials detection and in geology were considered. Also, some results recently obtained at VINCA Institute, with LIBS system based on transversely excited atmospheric (TEA) CO2 laser, are presented. Future investigations of LIBS will be oriented toward further improvement of the analytical performance of this technique, as well as on finding new application fields.",
title = "Laser-Induced Breakdown Spectroscopy (LIBS): Specific Applications",
volume = "9810",
doi = "10.1117/12.2228621"
}

Trtica, M., Savović, J., Stoiljković, M., Kuzmanović, M. M., Momčilović, M., Ciganović, J.,& Živković, S.. (2015). Laser-Induced Breakdown Spectroscopy (LIBS): Specific Applications. , 9810.
https://doi.org/10.1117/12.2228621

Trtica M, Savović J, Stoiljković M, Kuzmanović MM, Momčilović M, Ciganović J, Živković S. Laser-Induced Breakdown Spectroscopy (LIBS): Specific Applications. 2015;9810.
doi:10.1117/12.2228621 .

Trtica, Milan, Savović, Jelena, Stoiljković, Milovan, Kuzmanović, Miroslav M., Momčilović, Miloš, Ciganović, Jovan, Živković, Sanja, "Laser-Induced Breakdown Spectroscopy (LIBS): Specific Applications", 9810 (2015),
https://doi.org/10.1117/12.2228621 . .

TY  - JOUR
AU  - Momčilović, Miloš
AU  - Kuzmanović, Miroslav M.
AU  - Ranković, Dragan
AU  - Ciganović, Jovan
AU  - Stoiljković, Milovan
AU  - Savović, Jelena
AU  - Trtica, Milan
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/779
AB  - Spatially resolved, time-integrated optical emission spectroscopy was applied for investigation of copper plasma produced by a nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 gm. The effect of surrounding air pressure, in the pressure range 0.1 to 1013 mbar, on plasma formation and its characteristics was investigated. A linear dependence of intensity threshold for plasma formation on logarithm of air pressure was found. Lowering of the air pressure reduces the extent of gas breakdown, enabling better laser-target coupling and thus increases ablation. Optimum air pressure for target plasma formation was 0.1 mbar. Under that pressure, the induced plasma consisted of two clearly distinguished and spatially separated regions. The maximum intensity of emission, with sharp and well-resolved spectral lines and negligibly low background emission, was obtained from a plasma zone 8 mm from the target surface. The estimated excitation temperature in this zone was around 7000 K. The favorable signal to background ratio obtained in this plasma region indicates possible analytical application of TEA CO2 laser produced copper plasma. Detection limits of trace elements present in the Cu sample were on the order of 10 ppm (parts per million). Time-resolved measurements of spatially selected plasma zones were used to find a correlation between the observed spatial position and time delay.
T2  - Applied Spectroscopy
T1  - Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses
VL  - 69
IS  - 4
SP  - 419
EP  - 429
DO  - 10.1366/14-07584
ER  - 

@article{
author = "Momčilović, Miloš and Kuzmanović, Miroslav M. and Ranković, Dragan and Ciganović, Jovan and Stoiljković, Milovan and Savović, Jelena and Trtica, Milan",
year = "2015",
abstract = "Spatially resolved, time-integrated optical emission spectroscopy was applied for investigation of copper plasma produced by a nanosecond infrared (IR) transversely excited atmospheric (TEA) CO2 laser, operating at 10.6 gm. The effect of surrounding air pressure, in the pressure range 0.1 to 1013 mbar, on plasma formation and its characteristics was investigated. A linear dependence of intensity threshold for plasma formation on logarithm of air pressure was found. Lowering of the air pressure reduces the extent of gas breakdown, enabling better laser-target coupling and thus increases ablation. Optimum air pressure for target plasma formation was 0.1 mbar. Under that pressure, the induced plasma consisted of two clearly distinguished and spatially separated regions. The maximum intensity of emission, with sharp and well-resolved spectral lines and negligibly low background emission, was obtained from a plasma zone 8 mm from the target surface. The estimated excitation temperature in this zone was around 7000 K. The favorable signal to background ratio obtained in this plasma region indicates possible analytical application of TEA CO2 laser produced copper plasma. Detection limits of trace elements present in the Cu sample were on the order of 10 ppm (parts per million). Time-resolved measurements of spatially selected plasma zones were used to find a correlation between the observed spatial position and time delay.",
journal = "Applied Spectroscopy",
title = "Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses",
volume = "69",
number = "4",
pages = "419-429",
doi = "10.1366/14-07584"
}

Momčilović, M., Kuzmanović, M. M., Ranković, D., Ciganović, J., Stoiljković, M., Savović, J.,& Trtica, M.. (2015). Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses. in Applied Spectroscopy, 69(4), 419-429.
https://doi.org/10.1366/14-07584

Momčilović M, Kuzmanović MM, Ranković D, Ciganović J, Stoiljković M, Savović J, Trtica M. Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses. in Applied Spectroscopy. 2015;69(4):419-429.
doi:10.1366/14-07584 .

Momčilović, Miloš, Kuzmanović, Miroslav M., Ranković, Dragan, Ciganović, Jovan, Stoiljković, Milovan, Savović, Jelena, Trtica, Milan, "Optical Emission Studies of Copper Plasma Induced Using Infrared Transversely Excited Atmospheric (IR TEA) Carbon Dioxide Laser Pulses" in Applied Spectroscopy, 69, no. 4 (2015):419-429,
https://doi.org/10.1366/14-07584 . .

TY  - JOUR
AU  - Ranković, Dragan
AU  - Kuzmanović, Miroslav M.
AU  - Pavlović, Mirjana S.
AU  - Stoiljković, Milovan
AU  - Savović, Jelena
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/774
AB  - The effect of nitrogen addition (1-20 %) on atmospheric argon DC arc plasma parameters was investigated. Nitrogen was added to three initial plasma gas compositions: pure argon gas, argon gas with water aerosol, and argon gas with water aerosol containing 0.5 % KCl. Admixtures of nitrogen from 1 up to 10 % (in the case of Ar-N-2-water aerosol plasma) or up to 5 % (in the presence of 0.5 % KCl) produced a more contracted discharge, with larger gradients of electron number density and temperature, as compared to plasma without molecular gas addition. The opposite effect was observed in gas mixtures with 20 % of nitrogen. In that case, the arc core was expanded, and the radial profile of electron density and temperature became flatter as compared to the case of pure argon plasma. The changes in the radial structure of the discharge could be explained by increased thermal conductivity of mixed gas plasma and the presence of molecular ions. Increasing nitrogen content brings plasma closer to thermal equilibrium. To evaluate the effect of nitrogen upon analytic performance of the arc source, limits of detection (LODs) were measured for Zn, Cu, Li, and Rb. In plasma without KCl, the addition of nitrogen resulted in lowering of LODs for Cu, Li and Rb, while the opposite was observed for Zn. In the presence of KCl the addition of nitrogen had little or no effect on LODs for Cu, Li and Rb, while detection limits for Zn were increased.
T2  - Plasma Chemistry and Plasma Processing
T1  - Properties of Argon-Nitrogen Atmospheric Pressure DC Arc Plasma
VL  - 35
IS  - 6
SP  - 1071
EP  - 1095
DO  - 10.1007/s11090-015-9637-6
ER  - 

@article{
author = "Ranković, Dragan and Kuzmanović, Miroslav M. and Pavlović, Mirjana S. and Stoiljković, Milovan and Savović, Jelena",
year = "2015",
abstract = "The effect of nitrogen addition (1-20 %) on atmospheric argon DC arc plasma parameters was investigated. Nitrogen was added to three initial plasma gas compositions: pure argon gas, argon gas with water aerosol, and argon gas with water aerosol containing 0.5 % KCl. Admixtures of nitrogen from 1 up to 10 % (in the case of Ar-N-2-water aerosol plasma) or up to 5 % (in the presence of 0.5 % KCl) produced a more contracted discharge, with larger gradients of electron number density and temperature, as compared to plasma without molecular gas addition. The opposite effect was observed in gas mixtures with 20 % of nitrogen. In that case, the arc core was expanded, and the radial profile of electron density and temperature became flatter as compared to the case of pure argon plasma. The changes in the radial structure of the discharge could be explained by increased thermal conductivity of mixed gas plasma and the presence of molecular ions. Increasing nitrogen content brings plasma closer to thermal equilibrium. To evaluate the effect of nitrogen upon analytic performance of the arc source, limits of detection (LODs) were measured for Zn, Cu, Li, and Rb. In plasma without KCl, the addition of nitrogen resulted in lowering of LODs for Cu, Li and Rb, while the opposite was observed for Zn. In the presence of KCl the addition of nitrogen had little or no effect on LODs for Cu, Li and Rb, while detection limits for Zn were increased.",
journal = "Plasma Chemistry and Plasma Processing",
title = "Properties of Argon-Nitrogen Atmospheric Pressure DC Arc Plasma",
volume = "35",
number = "6",
pages = "1071-1095",
doi = "10.1007/s11090-015-9637-6"
}

Ranković, D., Kuzmanović, M. M., Pavlović, M. S., Stoiljković, M.,& Savović, J.. (2015). Properties of Argon-Nitrogen Atmospheric Pressure DC Arc Plasma. in Plasma Chemistry and Plasma Processing, 35(6), 1071-1095.
https://doi.org/10.1007/s11090-015-9637-6

Ranković D, Kuzmanović MM, Pavlović MS, Stoiljković M, Savović J. Properties of Argon-Nitrogen Atmospheric Pressure DC Arc Plasma. in Plasma Chemistry and Plasma Processing. 2015;35(6):1071-1095.
doi:10.1007/s11090-015-9637-6 .

Ranković, Dragan, Kuzmanović, Miroslav M., Pavlović, Mirjana S., Stoiljković, Milovan, Savović, Jelena, "Properties of Argon-Nitrogen Atmospheric Pressure DC Arc Plasma" in Plasma Chemistry and Plasma Processing, 35, no. 6 (2015):1071-1095,
https://doi.org/10.1007/s11090-015-9637-6 . .