Photon Buildup Factors in Laminated Dual-Layer Shields
نویسندگان
چکیده
منابع مشابه
A STUDY OF GAMMA RAY EXPOSURE BUILDUP FACTORS IN STRATIFIED SHIELDS FOR POINT ISOTROPIC SOURCES, INCLUDING THE EFFECTS OF INCOHERENT AND COHERENT SCATTERING
The effects of including incoherent (bound-electron) and coherent (Rayleigh) scattering in exposure buildup factor calculations for point isotropic gamma ray sources, penetrating a two-layer water-lead shield have been investigated in the gamma ray energy (E?) range of 40 keV to 3 MeV. Incoherent scattering decreases the values of these factors in both layers up to E? ~ 200 keV and the effect i...
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Photon ambient dose equivalent buildup factors were calculated for point and plaque isotropic cobalt-60 and cesium-137 radioactive sources irradiating a finite slab shield materials of ordinary concrete, barite concrete, lead, lead glass and water using MCNP5 code. Studied shield thickness ranged from 1 to 15 mean free paths (mfp). A variance reduction technique available in the code was used t...
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متن کاملcalculation of exposure buildup factors for point isotropic gamma ray sources in stratified spherical shields of water surrounded by lead and optimization of water-lead combination
exposure buildup factors have been calculated by monte carlo method for point isotropic gamma ray sources, penetrating a two-layer spherical shield of water surrounded by lead, and the effect of bremsstrahlung radiation on buildup factors has, in particular, been investigated, the results of which are in good agreement with previous works. the buildup factors were then calculated for various co...
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ژورنال
عنوان ژورنال: Nuclear Technology
سال: 2011
ISSN: 0029-5450,1943-7471
DOI: 10.13182/nt11-110