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 ap...plying the least square method.
Keywords:
photon reflection / total number albedo / total energy albedo / Monte Carlo method / mean number of photon scatterings
Source:
Nuclear technology and radiation protection, 2010, 25, 2, 100-106
Funding / projects:
Ministry of Science and Technological Development of the Republic of Serbia [141046]
TY - JOUR
AU - Ljubenov, Vladan
AU - Simović, 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 Simović, 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., Simović, 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, Simović 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, Simović, 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 . .
