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  • 标题:Total reflection coefficients of low-energy photons presented as universal functions
  • 本地全文:下载
  • 作者:Ljubenov Vladan ; Simović Rodoljub D. ; Marković Srpko
  • 期刊名称:Nuclear Technology and Radiation Protection
  • 印刷版ISSN:1451-3994
  • 出版年度:2010
  • 卷号:25
  • 期号:2
  • 页码:100-106
  • DOI:10.2298/NTRP1002100L
  • 出版社:VINČA Institute of Nuclear Sciences
  • 摘要:

    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.

  • 关键词:photon reflection; total number albedo; total energy albedo; Monte Carlo method; mean number of photon scatterings
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