TY  - JOUR
AU  - Telečki, Igor N.
AU  - Vukosavljević, Ljubiša
AU  - Trajić, Ivan
AU  - Erich, Marko
AU  - Jocić, Viktor
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10179
AB  - The mVINIS ion source, a part of FAMA installation at Vinca Institute of Nuclear Sciences, is able to produce multiple charged heavy ion beams through the utilization of vapors created by the process of melting solids inside the miniature oven (mini-oven). The mini-oven that was used previously could only reach the maximum temperature of 800?C, which is far too low for evaporating most metals. For this purpose, a higher operating-temperature of 1500?C was needed. Our study focuses on numerical finite element method analysis of the temperature distribution of newly designed mini-oven.
T2  - Thermal Science
T1  - The finite element method analysis of temperature distribution of the FAMA electron cyclotron resonance mini-oven
VL  - 26
IS  - 1 Part A
SP  - 175
EP  - 184
DO  - 10.2298/TSCI210519235T
ER  - 

@article{
author = "Telečki, Igor N. and Vukosavljević, Ljubiša and Trajić, Ivan and Erich, Marko and Jocić, Viktor",
year = "2022",
abstract = "The mVINIS ion source, a part of FAMA installation at Vinca Institute of Nuclear Sciences, is able to produce multiple charged heavy ion beams through the utilization of vapors created by the process of melting solids inside the miniature oven (mini-oven). The mini-oven that was used previously could only reach the maximum temperature of 800?C, which is far too low for evaporating most metals. For this purpose, a higher operating-temperature of 1500?C was needed. Our study focuses on numerical finite element method analysis of the temperature distribution of newly designed mini-oven.",
journal = "Thermal Science",
title = "The finite element method analysis of temperature distribution of the FAMA electron cyclotron resonance mini-oven",
volume = "26",
number = "1 Part A",
pages = "175-184",
doi = "10.2298/TSCI210519235T"
}

Telečki, I. N., Vukosavljević, L., Trajić, I., Erich, M.,& Jocić, V.. (2022). The finite element method analysis of temperature distribution of the FAMA electron cyclotron resonance mini-oven. in Thermal Science, 26(1 Part A), 175-184.
https://doi.org/10.2298/TSCI210519235T

Telečki IN, Vukosavljević L, Trajić I, Erich M, Jocić V. The finite element method analysis of temperature distribution of the FAMA electron cyclotron resonance mini-oven. in Thermal Science. 2022;26(1 Part A):175-184.
doi:10.2298/TSCI210519235T .

Telečki, Igor N., Vukosavljević, Ljubiša, Trajić, Ivan, Erich, Marko, Jocić, Viktor, "The finite element method analysis of temperature distribution of the FAMA electron cyclotron resonance mini-oven" in Thermal Science, 26, no. 1 Part A (2022):175-184,
https://doi.org/10.2298/TSCI210519235T . .

TY  - JOUR
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Mraković, Ana Đ.
AU  - Vukosavljević, Ljubiša
AU  - Trajić, Ivan
AU  - Kovač, Janez
AU  - Peruško, Davor
AU  - Gavrilov, Nemanja
AU  - Jovanović, Zoran M.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9150
AB  - In recent years polyoxometalates (POMs) have attracted significant research interest due to versatile properties. These properties are determined by the size, structure and elemental composition of POMs and hence play an important role in their application. In the present study, the ion beam irradiation (10 keV C+ ions, 5 × 1014–2.5 × 1015 ions/cm2) has been utilized for modification of physicochemical properties of 120 nm-thick layer of 12-tungstophosphoric acid (WPA). Scanning electron microscopy analysis of irradiated films showed change of morphology i.e. an increase of WPA grain size with irradiation and coalescence of grains at the highest fluence. This was accompanied by structural changes. Attenuated total reflectance Fourier transform infrared analysis revealed that vibration bands of Keggin anion became less pronounced as fluence increased, while Raman spectra appeared as strongly modified. The effect of irradiation with 1.25 × 1015 ions/cm2 on the structure of WPA was similar to the effect of thermal treatment at 600 °C. Irradiation of WPA led to decrease of the band gap (from 4.07 to 3.92 eV), which was correlated to transformation Keggin anions into a network of WO6 octahedra and PO4 tetrahedra. This is in line with increased number of W=Od bonds observed by UV–Visible diffuse reflectance spectroscopy. Beside transformation to bronzes a reduction of WPA was observed by X-ray Photoelectron Spectroscopy (shift to lower binding energy) and Raman methods, whereas the Raman spectra of irradiated samples were similar to heteropoly blue. The electrochemical properties of irradiated WPA were also assessed. Cyclic voltammetry measurements showed that at up to 1.25 × 1015 ions/cm2 lithiation capacity of WPA increases and activity for hydrogen evolution reaction (HER) improves. The highest fluence caused interconnection of WO6 octahedra, closing of lithiation pathways and decrease in the number of active sites for HER. Our results provide a novel insight into the effects of ion beam irradiation on WPA and demonstrate high potential for tuning of physicochemical properties of POMs that are relevant in wide range of applications. © 2021 Elsevier Ltd
T2  - Radiation Physics and Chemistry
T1  - Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid
VL  - 183
SP  - 109422
DO  - 10.1016/j.radphyschem.2021.109422
ER  - 

@article{
author = "Mravik, Željko and Bajuk-Bogdanović, Danica V. and Mraković, Ana Đ. and Vukosavljević, Ljubiša and Trajić, Ivan and Kovač, Janez and Peruško, Davor and Gavrilov, Nemanja and Jovanović, Zoran M.",
year = "2021",
abstract = "In recent years polyoxometalates (POMs) have attracted significant research interest due to versatile properties. These properties are determined by the size, structure and elemental composition of POMs and hence play an important role in their application. In the present study, the ion beam irradiation (10 keV C+ ions, 5 × 1014–2.5 × 1015 ions/cm2) has been utilized for modification of physicochemical properties of 120 nm-thick layer of 12-tungstophosphoric acid (WPA). Scanning electron microscopy analysis of irradiated films showed change of morphology i.e. an increase of WPA grain size with irradiation and coalescence of grains at the highest fluence. This was accompanied by structural changes. Attenuated total reflectance Fourier transform infrared analysis revealed that vibration bands of Keggin anion became less pronounced as fluence increased, while Raman spectra appeared as strongly modified. The effect of irradiation with 1.25 × 1015 ions/cm2 on the structure of WPA was similar to the effect of thermal treatment at 600 °C. Irradiation of WPA led to decrease of the band gap (from 4.07 to 3.92 eV), which was correlated to transformation Keggin anions into a network of WO6 octahedra and PO4 tetrahedra. This is in line with increased number of W=Od bonds observed by UV–Visible diffuse reflectance spectroscopy. Beside transformation to bronzes a reduction of WPA was observed by X-ray Photoelectron Spectroscopy (shift to lower binding energy) and Raman methods, whereas the Raman spectra of irradiated samples were similar to heteropoly blue. The electrochemical properties of irradiated WPA were also assessed. Cyclic voltammetry measurements showed that at up to 1.25 × 1015 ions/cm2 lithiation capacity of WPA increases and activity for hydrogen evolution reaction (HER) improves. The highest fluence caused interconnection of WO6 octahedra, closing of lithiation pathways and decrease in the number of active sites for HER. Our results provide a novel insight into the effects of ion beam irradiation on WPA and demonstrate high potential for tuning of physicochemical properties of POMs that are relevant in wide range of applications. © 2021 Elsevier Ltd",
journal = "Radiation Physics and Chemistry",
title = "Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid",
volume = "183",
pages = "109422",
doi = "10.1016/j.radphyschem.2021.109422"
}

Mravik, Ž., Bajuk-Bogdanović, D. V., Mraković, A. Đ., Vukosavljević, L., Trajić, I., Kovač, J., Peruško, D., Gavrilov, N.,& Jovanović, Z. M.. (2021). Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid. in Radiation Physics and Chemistry, 183, 109422.
https://doi.org/10.1016/j.radphyschem.2021.109422

Mravik Ž, Bajuk-Bogdanović DV, Mraković AĐ, Vukosavljević L, Trajić I, Kovač J, Peruško D, Gavrilov N, Jovanović ZM. Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid. in Radiation Physics and Chemistry. 2021;183:109422.
doi:10.1016/j.radphyschem.2021.109422 .

Mravik, Željko, Bajuk-Bogdanović, Danica V., Mraković, Ana Đ., Vukosavljević, Ljubiša, Trajić, Ivan, Kovač, Janez, Peruško, Davor, Gavrilov, Nemanja, Jovanović, Zoran M., "Structural and electrochemical properties of carbon ion beam irradiated 12-tungstophosphoric acid" in Radiation Physics and Chemistry, 183 (2021):109422,
https://doi.org/10.1016/j.radphyschem.2021.109422 . .

TY  - JOUR
AU  - Efremov, Andrey
AU  - Bogomolov, Sergey
AU  - Bekhterev, Vladimir
AU  - Dobrosavljević, Aleksandar S.
AU  - Nešković, Nebojša B.
AU  - Trajić, Ivan
AU  - Ćirić, Dragana
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=1451-39941801047E
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7786
AB  - Recent upgrading of the Facility for Modification and Analysis of Materials with Ion Beams-FAMA, in the Laboratory of Physics of the Vinca Institute of Nuclear Sciences, included the modernization of its electron cyclotron resonance ion source. Since the old ion source was being extensively used for more than 15 years for production of multiply charged ions from gases and solid substances, its complete reconstruction was needed. The main goal was to reconstruct its plasma and injection chambers and magnetic structure, and thus intensify the production of multiply charged ions. Also, it was decided to refurbish its major subsystems the vacuum system, the microwave system, the gas inlet system, the solid substance inlet system, and the control system. All these improvements have resulted in a substantial increase of ion beam currents, especially in the case of high charge states, with the operation of the ion source proven to be stable and reproducible.
T2  - Nuclear Technology and Radiation Protection
T1  - Upgrading the ECR ion source within FAMA
VL  - 33
IS  - 1
SP  - 47
EP  - 52
DO  - 10.2298/NTRP1801047E
ER  - 

@article{
author = "Efremov, Andrey and Bogomolov, Sergey and Bekhterev, Vladimir and Dobrosavljević, Aleksandar S. and Nešković, Nebojša B. and Trajić, Ivan and Ćirić, Dragana",
year = "2018",
abstract = "Recent upgrading of the Facility for Modification and Analysis of Materials with Ion Beams-FAMA, in the Laboratory of Physics of the Vinca Institute of Nuclear Sciences, included the modernization of its electron cyclotron resonance ion source. Since the old ion source was being extensively used for more than 15 years for production of multiply charged ions from gases and solid substances, its complete reconstruction was needed. The main goal was to reconstruct its plasma and injection chambers and magnetic structure, and thus intensify the production of multiply charged ions. Also, it was decided to refurbish its major subsystems the vacuum system, the microwave system, the gas inlet system, the solid substance inlet system, and the control system. All these improvements have resulted in a substantial increase of ion beam currents, especially in the case of high charge states, with the operation of the ion source proven to be stable and reproducible.",
journal = "Nuclear Technology and Radiation Protection",
title = "Upgrading the ECR ion source within FAMA",
volume = "33",
number = "1",
pages = "47-52",
doi = "10.2298/NTRP1801047E"
}

Efremov, A., Bogomolov, S., Bekhterev, V., Dobrosavljević, A. S., Nešković, N. B., Trajić, I.,& Ćirić, D.. (2018). Upgrading the ECR ion source within FAMA. in Nuclear Technology and Radiation Protection, 33(1), 47-52.
https://doi.org/10.2298/NTRP1801047E

Efremov A, Bogomolov S, Bekhterev V, Dobrosavljević AS, Nešković NB, Trajić I, Ćirić D. Upgrading the ECR ion source within FAMA. in Nuclear Technology and Radiation Protection. 2018;33(1):47-52.
doi:10.2298/NTRP1801047E .

Efremov, Andrey, Bogomolov, Sergey, Bekhterev, Vladimir, Dobrosavljević, Aleksandar S., Nešković, Nebojša B., Trajić, Ivan, Ćirić, Dragana, "Upgrading the ECR ion source within FAMA" in Nuclear Technology and Radiation Protection, 33, no. 1 (2018):47-52,
https://doi.org/10.2298/NTRP1801047E . .

TY  - CONF
AU  - Efremov, Andrey
AU  - Bogomolov, Sergey
AU  - Bekhterev, Vladimir
AU  - Dobrosavljević, Aleksandar S.
AU  - Vujović, Velibor V.
AU  - Nešković, Nebojša B.
AU  - Trajić, Ivan
PY  - 2018
UR  - http://aip.scitation.org/doi/abs/10.1063/1.5053291
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7900
AB  - The CAPRICE-type ECR ion source mVINIS has been upgraded by increasing its magnetic field to improve a plasma confinement and thereby enhance the source performance. This modification made it also possible to increase the internal diameter of the plasma chamber and to replace the coaxial microwave input by a waveguide. Some major subsystems such as: the vacuum system, the microwave system, the gas inlet system, the solid substance inlet system, and the control system have been also refurbished. All these improvements have resulted in a substantial increase of ion beam currents, especially in the case of high charge states, with the operation of the ion source proven to be stable and reproducible. This modification can be applied to other CAPRICE-type ion sources. © 2018 Author(s).
C3  - AIP Conference Proceedings
T1  - Upgrading of the CAPRICE type ECR ion source
VL  - 2011
SP  - 040017
DO  - 10.1063/1.5053291
ER  - 

@conference{
author = "Efremov, Andrey and Bogomolov, Sergey and Bekhterev, Vladimir and Dobrosavljević, Aleksandar S. and Vujović, Velibor V. and Nešković, Nebojša B. and Trajić, Ivan",
year = "2018",
abstract = "The CAPRICE-type ECR ion source mVINIS has been upgraded by increasing its magnetic field to improve a plasma confinement and thereby enhance the source performance. This modification made it also possible to increase the internal diameter of the plasma chamber and to replace the coaxial microwave input by a waveguide. Some major subsystems such as: the vacuum system, the microwave system, the gas inlet system, the solid substance inlet system, and the control system have been also refurbished. All these improvements have resulted in a substantial increase of ion beam currents, especially in the case of high charge states, with the operation of the ion source proven to be stable and reproducible. This modification can be applied to other CAPRICE-type ion sources. © 2018 Author(s).",
journal = "AIP Conference Proceedings",
title = "Upgrading of the CAPRICE type ECR ion source",
volume = "2011",
pages = "040017",
doi = "10.1063/1.5053291"
}

Efremov, A., Bogomolov, S., Bekhterev, V., Dobrosavljević, A. S., Vujović, V. V., Nešković, N. B.,& Trajić, I.. (2018). Upgrading of the CAPRICE type ECR ion source. in AIP Conference Proceedings, 2011, 040017.
https://doi.org/10.1063/1.5053291

Efremov A, Bogomolov S, Bekhterev V, Dobrosavljević AS, Vujović VV, Nešković NB, Trajić I. Upgrading of the CAPRICE type ECR ion source. in AIP Conference Proceedings. 2018;2011:040017.
doi:10.1063/1.5053291 .

Efremov, Andrey, Bogomolov, Sergey, Bekhterev, Vladimir, Dobrosavljević, Aleksandar S., Vujović, Velibor V., Nešković, Nebojša B., Trajić, Ivan, "Upgrading of the CAPRICE type ECR ion source" in AIP Conference Proceedings, 2011 (2018):040017,
https://doi.org/10.1063/1.5053291 . .

TY  - JOUR
AU  - Trajić, Ivan
AU  - Beličev, Petar
AU  - Petrović, Srđan M.
AU  - Rajčević, Milan N.
AU  - Munitlak, Dragan M.
AU  - Bojović, Boško
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5268
AB  - A method of measuring particle fluence and ion beam current in experiments of ion implantation is presented. The design and technical details of a realized prototype device are discussed. Special care is devoted to the effect of secondary electrons and its elimination. An electrostatic solution with two electrodes for the suppression of secondary electrons has been realized. Our approach provides redundancy and allows lower bias voltages to be used for the suppression of electrons. The presented results illustrate the efficiency of the proposed solution.
T2  - Nuclear technology and radiation protection
T1  - Prototype of the Particle Fluence Measurement Device
VL  - 27
IS  - 4
SP  - 404
EP  - 408
DO  - 10.2298/NTRP1204404T
ER  - 

@article{
author = "Trajić, Ivan and Beličev, Petar and Petrović, Srđan M. and Rajčević, Milan N. and Munitlak, Dragan M. and Bojović, Boško",
year = "2012",
abstract = "A method of measuring particle fluence and ion beam current in experiments of ion implantation is presented. The design and technical details of a realized prototype device are discussed. Special care is devoted to the effect of secondary electrons and its elimination. An electrostatic solution with two electrodes for the suppression of secondary electrons has been realized. Our approach provides redundancy and allows lower bias voltages to be used for the suppression of electrons. The presented results illustrate the efficiency of the proposed solution.",
journal = "Nuclear technology and radiation protection",
title = "Prototype of the Particle Fluence Measurement Device",
volume = "27",
number = "4",
pages = "404-408",
doi = "10.2298/NTRP1204404T"
}

Trajić, I., Beličev, P., Petrović, S. M., Rajčević, M. N., Munitlak, D. M.,& Bojović, B.. (2012). Prototype of the Particle Fluence Measurement Device. in Nuclear technology and radiation protection, 27(4), 404-408.
https://doi.org/10.2298/NTRP1204404T

Trajić I, Beličev P, Petrović SM, Rajčević MN, Munitlak DM, Bojović B. Prototype of the Particle Fluence Measurement Device. in Nuclear technology and radiation protection. 2012;27(4):404-408.
doi:10.2298/NTRP1204404T .

Trajić, Ivan, Beličev, Petar, Petrović, Srđan M., Rajčević, Milan N., Munitlak, Dragan M., Bojović, Boško, "Prototype of the Particle Fluence Measurement Device" in Nuclear technology and radiation protection, 27, no. 4 (2012):404-408,
https://doi.org/10.2298/NTRP1204404T . .