TY  - JOUR
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7590
AB  - Surface changes created by interaction of transversely excited atmospheric carbon dioxide (TEA CO2) laser with titanium target/implant in nitrogen and carbon dioxide gas were studied. TEA CO2 laser operated at 10.6 mu m, pulse length of 100 ns and fluence of similar to 17 J/cm(2) which was sufficient for inducing surface modifications. Induced changes depend on the gas used. In both gases the grain structure was produced (central irradiated zone) but its forms were diverse, (N-2: irregular shape; CO2: hill-like forms). Hydrodynamic features at peripheral zone, like resolidified droplets, were recorded only in CO2 gas. Elemental analysis of the titanium target surface indicated that under a nitrogen atmosphere surface nitridation occurred. In addition, irradiation in both gases was followed by appearance of plasma in front of the target. The existence of plasma indicates relatively high temperatures created above the target surface offering a sterilizing effect.
T2  - Russian Journal of Physical Chemistry A
T1  - Pulsed TEA CO2 Laser Irradiation of Titanium in Nitrogen and Carbon Dioxide Gases
VL  - 91
SP  - 2696
EP  - 2701
DO  - 10.1134/S003602441713009X
ER  - 

@article{
year = "2017",
abstract = "Surface changes created by interaction of transversely excited atmospheric carbon dioxide (TEA CO2) laser with titanium target/implant in nitrogen and carbon dioxide gas were studied. TEA CO2 laser operated at 10.6 mu m, pulse length of 100 ns and fluence of similar to 17 J/cm(2) which was sufficient for inducing surface modifications. Induced changes depend on the gas used. In both gases the grain structure was produced (central irradiated zone) but its forms were diverse, (N-2: irregular shape; CO2: hill-like forms). Hydrodynamic features at peripheral zone, like resolidified droplets, were recorded only in CO2 gas. Elemental analysis of the titanium target surface indicated that under a nitrogen atmosphere surface nitridation occurred. In addition, irradiation in both gases was followed by appearance of plasma in front of the target. The existence of plasma indicates relatively high temperatures created above the target surface offering a sterilizing effect.",
journal = "Russian Journal of Physical Chemistry A",
title = "Pulsed TEA CO2 Laser Irradiation of Titanium in Nitrogen and Carbon Dioxide Gases",
volume = "91",
pages = "2696-2701",
doi = "10.1134/S003602441713009X"
}

(2017). Pulsed TEA CO2 Laser Irradiation of Titanium in Nitrogen and Carbon Dioxide Gases. in Russian Journal of Physical Chemistry A, 91, 2696-2701.
https://doi.org/10.1134/S003602441713009X

Pulsed TEA CO2 Laser Irradiation of Titanium in Nitrogen and Carbon Dioxide Gases. in Russian Journal of Physical Chemistry A. 2017;91:2696-2701.
doi:10.1134/S003602441713009X .

"Pulsed TEA CO2 Laser Irradiation of Titanium in Nitrogen and Carbon Dioxide Gases" in Russian Journal of Physical Chemistry A, 91 (2017):2696-2701,
https://doi.org/10.1134/S003602441713009X . .

TY  - JOUR
AU  - Kovačević, Milan S.
AU  - Djordjevich, Alexandar
AU  - Savović, Svetislav
AU  - Bajic, Jovan S.
AU  - Stupar, Dragan Z.
AU  - Slankamenac, Miloš P.
AU  - Kovačević, Milojko
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5592
AB  - As optical fibres are used ever more extensively in space applications, nuclear industry, medicine and high-energy physics experiments, it has become essential to investigate the influence of ionizing radiation on their characteristics. In this work, the radiation-induced attenuation at 530 nm is investigated experimentally in step-index multimode polymethyl-methacrylate plastic optical fibres exposed to low dose-rate gamma radiation. Cumulative doses ranged from 50 Gy to 500 Gy. The radiation induced attenuation has been empirically found to obey the power law RIA = aD(b), where D is the total radiation dose and a and b are the constants determined by fitting.
T2  - Nuclear technology and radiation protection
T1  - Measurement of (Co)-C-60 Gamma Radiation Induced Attenuation in Multimode Step-Index Pof At 530 Nm
VL  - 28
IS  - 2
SP  - 158
EP  - 162
DO  - 10.2298/NTRP1302158K
ER  - 

@article{
author = "Kovačević, Milan S. and Djordjevich, Alexandar and Savović, Svetislav and Bajic, Jovan S. and Stupar, Dragan Z. and Slankamenac, Miloš P. and Kovačević, Milojko",
year = "2013",
abstract = "As optical fibres are used ever more extensively in space applications, nuclear industry, medicine and high-energy physics experiments, it has become essential to investigate the influence of ionizing radiation on their characteristics. In this work, the radiation-induced attenuation at 530 nm is investigated experimentally in step-index multimode polymethyl-methacrylate plastic optical fibres exposed to low dose-rate gamma radiation. Cumulative doses ranged from 50 Gy to 500 Gy. The radiation induced attenuation has been empirically found to obey the power law RIA = aD(b), where D is the total radiation dose and a and b are the constants determined by fitting.",
journal = "Nuclear technology and radiation protection",
title = "Measurement of (Co)-C-60 Gamma Radiation Induced Attenuation in Multimode Step-Index Pof At 530 Nm",
volume = "28",
number = "2",
pages = "158-162",
doi = "10.2298/NTRP1302158K"
}

Kovačević, M. S., Djordjevich, A., Savović, S., Bajic, J. S., Stupar, D. Z., Slankamenac, M. P.,& Kovačević, M.. (2013). Measurement of (Co)-C-60 Gamma Radiation Induced Attenuation in Multimode Step-Index Pof At 530 Nm. in Nuclear technology and radiation protection, 28(2), 158-162.
https://doi.org/10.2298/NTRP1302158K

Kovačević MS, Djordjevich A, Savović S, Bajic JS, Stupar DZ, Slankamenac MP, Kovačević M. Measurement of (Co)-C-60 Gamma Radiation Induced Attenuation in Multimode Step-Index Pof At 530 Nm. in Nuclear technology and radiation protection. 2013;28(2):158-162.
doi:10.2298/NTRP1302158K .

Kovačević, Milan S., Djordjevich, Alexandar, Savović, Svetislav, Bajic, Jovan S., Stupar, Dragan Z., Slankamenac, Miloš P., Kovačević, Milojko, "Measurement of (Co)-C-60 Gamma Radiation Induced Attenuation in Multimode Step-Index Pof At 530 Nm" in Nuclear technology and radiation protection, 28, no. 2 (2013):158-162,
https://doi.org/10.2298/NTRP1302158K . .

TY  - JOUR
AU  - Kovačević, Milan S.
AU  - Savović, Svetislav
AU  - Djordjevich, A.
AU  - Bajic, J.
AU  - Stupar, D.
AU  - Kovačević, Milojko
AU  - Simic, S.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5273
AB  - In this work, we present the experimental study of the radiation-induced attenuation in step-index polymethyl-methacrylate based plastic optical fibre by exposure to low dose rate ionizing radiation. The low dose exposure has been found to induce significant permanent attenuation in plastic optical fibres. Based on the experimental results, the formula between radiation-induced attenuation and radiation dose is obtained accordingly. The recovery properties of plastic optical fibre also were investigated. The fibre begins to recover immediately after irradiation, but it does not fully recover, i.e. the irradiation leads to permanent damage of polymer. (C) 2012 Elsevier Ltd. All rights reserved.
T2  - Optics and Laser Technology
T1  - Measurements of growth and decay of radiation induced attenuation during the irradiation and recovery of plastic optical fibres
VL  - 47
SP  - 148
EP  - 151
DO  - 10.1016/j.optlastec.2012.09.019
ER  - 

@article{
author = "Kovačević, Milan S. and Savović, Svetislav and Djordjevich, A. and Bajic, J. and Stupar, D. and Kovačević, Milojko and Simic, S.",
year = "2013",
abstract = "In this work, we present the experimental study of the radiation-induced attenuation in step-index polymethyl-methacrylate based plastic optical fibre by exposure to low dose rate ionizing radiation. The low dose exposure has been found to induce significant permanent attenuation in plastic optical fibres. Based on the experimental results, the formula between radiation-induced attenuation and radiation dose is obtained accordingly. The recovery properties of plastic optical fibre also were investigated. The fibre begins to recover immediately after irradiation, but it does not fully recover, i.e. the irradiation leads to permanent damage of polymer. (C) 2012 Elsevier Ltd. All rights reserved.",
journal = "Optics and Laser Technology",
title = "Measurements of growth and decay of radiation induced attenuation during the irradiation and recovery of plastic optical fibres",
volume = "47",
pages = "148-151",
doi = "10.1016/j.optlastec.2012.09.019"
}

Kovačević, M. S., Savović, S., Djordjevich, A., Bajic, J., Stupar, D., Kovačević, M.,& Simic, S.. (2013). Measurements of growth and decay of radiation induced attenuation during the irradiation and recovery of plastic optical fibres. in Optics and Laser Technology, 47, 148-151.
https://doi.org/10.1016/j.optlastec.2012.09.019

Kovačević MS, Savović S, Djordjevich A, Bajic J, Stupar D, Kovačević M, Simic S. Measurements of growth and decay of radiation induced attenuation during the irradiation and recovery of plastic optical fibres. in Optics and Laser Technology. 2013;47:148-151.
doi:10.1016/j.optlastec.2012.09.019 .

Kovačević, Milan S., Savović, Svetislav, Djordjevich, A., Bajic, J., Stupar, D., Kovačević, Milojko, Simic, S., "Measurements of growth and decay of radiation induced attenuation during the irradiation and recovery of plastic optical fibres" in Optics and Laser Technology, 47 (2013):148-151,
https://doi.org/10.1016/j.optlastec.2012.09.019 . .

TY  - JOUR
AU  - Jelenkovic, Emil V.
AU  - Kovačević, Milan S.
AU  - Stupar, Dragan Z.
AU  - Bajic, Jovan S.
AU  - Slankamenac, Miloš P.
AU  - Kovačević, Milojko
AU  - To, Suet
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5695
AB  - N-type thin film transistors (TFTs) fabricated with fluorinated and hydrogenated polysilicon were exposed to gamma radiation to a cumulative dose up to 1200 Gy(Si). During irradiation, the gate electrode was biased with a positive voltage up to 4.8 V. The effect of irradiation on the electrical characteristics of the devices was monitored after the irradiation steps and in a prolonged period after irradiation. The main monitoring parameter was the threshold voltage which was found to have linear dependence on irradiation dose. This, together with obtained low fading, suggests that thin transistors have potential as radiation dosimeters.
T2  - Measurement Science and Technology
T1  - N-channel polysilicon thin film transistors as gamma-ray detectors
VL  - 24
IS  - 10
DO  - 10.1088/0957-0233/24/10/105103
ER  - 

@article{
author = "Jelenkovic, Emil V. and Kovačević, Milan S. and Stupar, Dragan Z. and Bajic, Jovan S. and Slankamenac, Miloš P. and Kovačević, Milojko and To, Suet",
year = "2013",
abstract = "N-type thin film transistors (TFTs) fabricated with fluorinated and hydrogenated polysilicon were exposed to gamma radiation to a cumulative dose up to 1200 Gy(Si). During irradiation, the gate electrode was biased with a positive voltage up to 4.8 V. The effect of irradiation on the electrical characteristics of the devices was monitored after the irradiation steps and in a prolonged period after irradiation. The main monitoring parameter was the threshold voltage which was found to have linear dependence on irradiation dose. This, together with obtained low fading, suggests that thin transistors have potential as radiation dosimeters.",
journal = "Measurement Science and Technology",
title = "N-channel polysilicon thin film transistors as gamma-ray detectors",
volume = "24",
number = "10",
doi = "10.1088/0957-0233/24/10/105103"
}

Jelenkovic, E. V., Kovačević, M. S., Stupar, D. Z., Bajic, J. S., Slankamenac, M. P., Kovačević, M.,& To, S.. (2013). N-channel polysilicon thin film transistors as gamma-ray detectors. in Measurement Science and Technology, 24(10).
https://doi.org/10.1088/0957-0233/24/10/105103

Jelenkovic EV, Kovačević MS, Stupar DZ, Bajic JS, Slankamenac MP, Kovačević M, To S. N-channel polysilicon thin film transistors as gamma-ray detectors. in Measurement Science and Technology. 2013;24(10).
doi:10.1088/0957-0233/24/10/105103 .

Jelenkovic, Emil V., Kovačević, Milan S., Stupar, Dragan Z., Bajic, Jovan S., Slankamenac, Miloš P., Kovačević, Milojko, To, Suet, "N-channel polysilicon thin film transistors as gamma-ray detectors" in Measurement Science and Technology, 24, no. 10 (2013),
https://doi.org/10.1088/0957-0233/24/10/105103 . .

TY  - JOUR
AU  - Savović, Svetislav
AU  - Todorović, Živojin
AU  - Djordjevich, Alexandar
AU  - Jokić, Stevan
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4572
AB  - The timescale for emission of three fragments (Z GT = 8) in the 12.7 GeV He-4+U-238 reaction has been studied using a sandwich configuration of the Makrofol polycarbonate track detector. In events with varying multiplicity of heavy fragments (Z GT 20), the differences of the correlation functions for relative angle and relative velocity between pairs of fragments have been studied in order to determine the fragment emission timescale. A sequential decay mechanism for the excited residual nuclei was found to be consistent with experimental data. It was determined that the fragment emission time decreased with decreasing multiplicity of heavy fragments from 1200 +/- 80 fm c(-1) for events with two heavy fragments to 400 +/- 50 fm c(-1) for events with one heavy fragment.
T2  - Physica Scripta
T1  - On the determination of the time-scale of three-fragment emission in the 12.7 GeV He-4+U-238 reaction using the polycarbonate track detector Makrofol
VL  - 84
IS  - 5
DO  - 10.1088/0031-8949/84/05/055201
ER  - 

@article{
author = "Savović, Svetislav and Todorović, Živojin and Djordjevich, Alexandar and Jokić, Stevan",
year = "2011",
abstract = "The timescale for emission of three fragments (Z GT = 8) in the 12.7 GeV He-4+U-238 reaction has been studied using a sandwich configuration of the Makrofol polycarbonate track detector. In events with varying multiplicity of heavy fragments (Z GT 20), the differences of the correlation functions for relative angle and relative velocity between pairs of fragments have been studied in order to determine the fragment emission timescale. A sequential decay mechanism for the excited residual nuclei was found to be consistent with experimental data. It was determined that the fragment emission time decreased with decreasing multiplicity of heavy fragments from 1200 +/- 80 fm c(-1) for events with two heavy fragments to 400 +/- 50 fm c(-1) for events with one heavy fragment.",
journal = "Physica Scripta",
title = "On the determination of the time-scale of three-fragment emission in the 12.7 GeV He-4+U-238 reaction using the polycarbonate track detector Makrofol",
volume = "84",
number = "5",
doi = "10.1088/0031-8949/84/05/055201"
}

Savović, S., Todorović, Ž., Djordjevich, A.,& Jokić, S.. (2011). On the determination of the time-scale of three-fragment emission in the 12.7 GeV He-4+U-238 reaction using the polycarbonate track detector Makrofol. in Physica Scripta, 84(5).
https://doi.org/10.1088/0031-8949/84/05/055201

Savović S, Todorović Ž, Djordjevich A, Jokić S. On the determination of the time-scale of three-fragment emission in the 12.7 GeV He-4+U-238 reaction using the polycarbonate track detector Makrofol. in Physica Scripta. 2011;84(5).
doi:10.1088/0031-8949/84/05/055201 .

Savović, Svetislav, Todorović, Živojin, Djordjevich, Alexandar, Jokić, Stevan, "On the determination of the time-scale of three-fragment emission in the 12.7 GeV He-4+U-238 reaction using the polycarbonate track detector Makrofol" in Physica Scripta, 84, no. 5 (2011),
https://doi.org/10.1088/0031-8949/84/05/055201 . .

TY  - JOUR
AU  - Savović, Svetislav
AU  - Djordjevich, A.
AU  - Jokić, Stevan
AU  - Khan, E. U.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4326
AB  - The process of mass transfer is investigated occurring during the first of two steps of the 17.0-MeV/u Xe-132 + U-238 heavy-ion reaction. Mass of the projectile-like nucleus after the first reaction step has been determined by the Fokker-Planck equation. Results have been compared with previously reported measurements.
T2  - Physics of Atomic Nuclei
T1  - Mass transfer during the prefission step in the 17.0-MeV/u Xe-132+U-238 interaction
VL  - 74
IS  - 5
SP  - 701
EP  - 705
DO  - 10.1134/S1063778811040120
ER  - 

@article{
author = "Savović, Svetislav and Djordjevich, A. and Jokić, Stevan and Khan, E. U.",
year = "2011",
abstract = "The process of mass transfer is investigated occurring during the first of two steps of the 17.0-MeV/u Xe-132 + U-238 heavy-ion reaction. Mass of the projectile-like nucleus after the first reaction step has been determined by the Fokker-Planck equation. Results have been compared with previously reported measurements.",
journal = "Physics of Atomic Nuclei",
title = "Mass transfer during the prefission step in the 17.0-MeV/u Xe-132+U-238 interaction",
volume = "74",
number = "5",
pages = "701-705",
doi = "10.1134/S1063778811040120"
}

Savović, S., Djordjevich, A., Jokić, S.,& Khan, E. U.. (2011). Mass transfer during the prefission step in the 17.0-MeV/u Xe-132+U-238 interaction. in Physics of Atomic Nuclei, 74(5), 701-705.
https://doi.org/10.1134/S1063778811040120

Savović S, Djordjevich A, Jokić S, Khan EU. Mass transfer during the prefission step in the 17.0-MeV/u Xe-132+U-238 interaction. in Physics of Atomic Nuclei. 2011;74(5):701-705.
doi:10.1134/S1063778811040120 .

Savović, Svetislav, Djordjevich, A., Jokić, Stevan, Khan, E. U., "Mass transfer during the prefission step in the 17.0-MeV/u Xe-132+U-238 interaction" in Physics of Atomic Nuclei, 74, no. 5 (2011):701-705,
https://doi.org/10.1134/S1063778811040120 . .