Ljubenov, Vladan

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  • Ljubenov, Vladan (3)
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Author's Bibliography

Interpolation formula for particle reflection coefficient of keV light ions obliquely incident on heavy solids

Vukanic, Jovan; Simovic, Rodoljub D.; Ljubenov, Vladan

(2011)

TY  - JOUR
AU  - Vukanic, Jovan
AU  - Simovic, Rodoljub D.
AU  - Ljubenov, Vladan
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4218
AB  - The particle reflection coefficient of light keV ions backscattered from heavy solids as a function of the ion incidence angle has been determined by a suitable interpolation formula. The formula has two fitting parameters which are obtained by using results from two limiting analytic approaches: by the single collision model - in case of nearly perpendicular incidence; and by the small-angle multiple scattering theory - in case of glancing angles of incidence. The obtained interpolation formula is a universal function of the scaled transport cross section and the angle of incidence. Comparison of our calculations with Monte Carlo simulation data and the experimental results of other authors gives good agreement for particle reflection coefficient. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
T1  - Interpolation formula for particle reflection coefficient of keV light ions obliquely incident on heavy solids
VL  - 269
IS  - 2
SP  - 89
EP  - 93
DO  - 10.1016/j.nimb.2010.10.023
ER  - 
@article{
author = "Vukanic, Jovan and Simovic, Rodoljub D. and Ljubenov, Vladan",
year = "2011",
abstract = "The particle reflection coefficient of light keV ions backscattered from heavy solids as a function of the ion incidence angle has been determined by a suitable interpolation formula. The formula has two fitting parameters which are obtained by using results from two limiting analytic approaches: by the single collision model - in case of nearly perpendicular incidence; and by the small-angle multiple scattering theory - in case of glancing angles of incidence. The obtained interpolation formula is a universal function of the scaled transport cross section and the angle of incidence. Comparison of our calculations with Monte Carlo simulation data and the experimental results of other authors gives good agreement for particle reflection coefficient. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms",
title = "Interpolation formula for particle reflection coefficient of keV light ions obliquely incident on heavy solids",
volume = "269",
number = "2",
pages = "89-93",
doi = "10.1016/j.nimb.2010.10.023"
}
Vukanic, J., Simovic, R. D.,& Ljubenov, V.. (2011). Interpolation formula for particle reflection coefficient of keV light ions obliquely incident on heavy solids. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 269(2), 89-93.
https://doi.org/10.1016/j.nimb.2010.10.023
Vukanic J, Simovic RD, Ljubenov V. Interpolation formula for particle reflection coefficient of keV light ions obliquely incident on heavy solids. in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms. 2011;269(2):89-93.
doi:10.1016/j.nimb.2010.10.023 .
Vukanic, Jovan, Simovic, Rodoljub D., Ljubenov, Vladan, "Interpolation formula for particle reflection coefficient of keV light ions obliquely incident on heavy solids" in Nuclear Instruments and Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms, 269, no. 2 (2011):89-93,
https://doi.org/10.1016/j.nimb.2010.10.023 . .
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Total Reflection Coefficients of Low-Energy Photons Presented as Universal Functions

Ljubenov, Vladan; Simovic, Rodoljub D.; Marković, Srpko; Ilic, Radovan D.

(2010)

TY  - JOUR
AU  - Ljubenov, Vladan
AU  - Simovic, Rodoljub D.
AU  - Marković, Srpko
AU  - Ilic, Radovan D.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4120
AB  - The possibility of expressing the total particle and energy reflection coefficients of low-energy photons in the form of universal functions valid for different shielding materials is investigated in this paper. The analysis is based on the results of Monte Carlo simulations of photon reflection by using MCNP, FOTELP, and PENELOPE codes. The normal incidence of the narrow monoenergetic photon beam of the unit intensity and of initial energies from 20 keV up to 100 keV is considered, and particle and energy reflection coefficients from the plane homogenous targets of water, aluminum, and iron are determined and compared. The representations of albedo coefficients on the initial photon energy, on the probability of large-angle photon scattering, and on the mean number of photon scatterings are examined. It is found out that only the rescaled albedo coefficients dependent on the mean number of photon scatterings have the form of universal functions and these functions are determined by applying the least square method.
T2  - Nuclear technology and radiation protection
T1  - Total Reflection Coefficients of Low-Energy Photons Presented as Universal Functions
VL  - 25
IS  - 2
SP  - 100
EP  - 106
DO  - 10.2298/NTRP1002100L
ER  - 
@article{
author = "Ljubenov, Vladan and Simovic, Rodoljub D. and Marković, Srpko and Ilic, Radovan D.",
year = "2010",
abstract = "The possibility of expressing the total particle and energy reflection coefficients of low-energy photons in the form of universal functions valid for different shielding materials is investigated in this paper. The analysis is based on the results of Monte Carlo simulations of photon reflection by using MCNP, FOTELP, and PENELOPE codes. The normal incidence of the narrow monoenergetic photon beam of the unit intensity and of initial energies from 20 keV up to 100 keV is considered, and particle and energy reflection coefficients from the plane homogenous targets of water, aluminum, and iron are determined and compared. The representations of albedo coefficients on the initial photon energy, on the probability of large-angle photon scattering, and on the mean number of photon scatterings are examined. It is found out that only the rescaled albedo coefficients dependent on the mean number of photon scatterings have the form of universal functions and these functions are determined by applying the least square method.",
journal = "Nuclear technology and radiation protection",
title = "Total Reflection Coefficients of Low-Energy Photons Presented as Universal Functions",
volume = "25",
number = "2",
pages = "100-106",
doi = "10.2298/NTRP1002100L"
}
Ljubenov, V., Simovic, R. D., Marković, S.,& Ilic, R. D.. (2010). Total Reflection Coefficients of Low-Energy Photons Presented as Universal Functions. in Nuclear technology and radiation protection, 25(2), 100-106.
https://doi.org/10.2298/NTRP1002100L
Ljubenov V, Simovic RD, Marković S, Ilic RD. Total Reflection Coefficients of Low-Energy Photons Presented as Universal Functions. in Nuclear technology and radiation protection. 2010;25(2):100-106.
doi:10.2298/NTRP1002100L .
Ljubenov, Vladan, Simovic, Rodoljub D., Marković, Srpko, Ilic, Radovan D., "Total Reflection Coefficients of Low-Energy Photons Presented as Universal Functions" in Nuclear technology and radiation protection, 25, no. 2 (2010):100-106,
https://doi.org/10.2298/NTRP1002100L . .
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Photon Scattering and Reflection in Medical Diagnostic Energy Domain

Ljubenov, Vladan; Simovic, Rodoljub; Marković, Srpko; Ilic, Radovan D.

(2008)

TY  - JOUR
AU  - Ljubenov, Vladan
AU  - Simovic, Rodoljub
AU  - Marković, Srpko
AU  - Ilic, Radovan D.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3540
AB  - The dependence of reflected photons angular and energy distributions on parameter c - the probability for large-angle scattering - is treated in this paper. The simulation of photon reflection was performed by the FOTELP code for a normal incidence of photons into infinite slabs of common shielding materials, and for the photon initial energies of 20 keV up to 100 keV.
T2  - Nuclear technology and radiation protection
T1  - Photon Scattering and Reflection in Medical Diagnostic Energy Domain
VL  - 23
IS  - 1
SP  - 31
EP  - 36
DO  - 10.2298/NTRP0801031L
ER  - 
@article{
author = "Ljubenov, Vladan and Simovic, Rodoljub and Marković, Srpko and Ilic, Radovan D.",
year = "2008",
abstract = "The dependence of reflected photons angular and energy distributions on parameter c - the probability for large-angle scattering - is treated in this paper. The simulation of photon reflection was performed by the FOTELP code for a normal incidence of photons into infinite slabs of common shielding materials, and for the photon initial energies of 20 keV up to 100 keV.",
journal = "Nuclear technology and radiation protection",
title = "Photon Scattering and Reflection in Medical Diagnostic Energy Domain",
volume = "23",
number = "1",
pages = "31-36",
doi = "10.2298/NTRP0801031L"
}
Ljubenov, V., Simovic, R., Marković, S.,& Ilic, R. D.. (2008). Photon Scattering and Reflection in Medical Diagnostic Energy Domain. in Nuclear technology and radiation protection, 23(1), 31-36.
https://doi.org/10.2298/NTRP0801031L
Ljubenov V, Simovic R, Marković S, Ilic RD. Photon Scattering and Reflection in Medical Diagnostic Energy Domain. in Nuclear technology and radiation protection. 2008;23(1):31-36.
doi:10.2298/NTRP0801031L .
Ljubenov, Vladan, Simovic, Rodoljub, Marković, Srpko, Ilic, Radovan D., "Photon Scattering and Reflection in Medical Diagnostic Energy Domain" in Nuclear technology and radiation protection, 23, no. 1 (2008):31-36,
https://doi.org/10.2298/NTRP0801031L . .
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