Monte Carlo simulation of reflection effects of multi-element materials on gamma rays

作     者：Ying-Hong Zuo Jin-Hui Zhu Peng Shang Ying-Hong Zuo;Jin-Hui Zhu;Peng Shang

作者机构：Northwest Institute of Nuclear TechnologyXi’an 710024China 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：2021年第32卷第1期

页      面：85-94页

核心收录：

学科分类：082704[工学-辐射防护及环境保护] 08[工学] 0827[工学-核科学与技术] 

基　　金：This work was supported by the State Key Lab of Intense Pulsed Radiation Simulation and Effect Basic Research Foundation(No.SKLIPR1504) 

主　　题：Multi-element materials Gamma albedo factor Effective atomic number Monte Carlo simulation 

摘      要：To study the effects of the gamma reflection of multi-element materials,gamma ray transport models of single-element materials,such as iron and lead,and multielement materials,such as polyethylene and ordinary concrete,were established in this *** among the albedo factors of the gamma photons and energies and average energy of the reflected gamma rays by material type,material thickness,incident gamma energy,and incidence angle of gamma rays were obtained by Monte Carlo *** results show that the albedo factors of single-element and multi-element materials increase rapidly with an increase in the material *** the thickness of the material increases to a certain value,the albedo factors do not increase further but rather tend to the saturation *** saturation values for the albedo factors of the gamma photons,and energies and the reflection thickness are related not only to the type of material but also to the incident gamma energy and incidence angle of the gamma *** a given incident gamma energy,which is between 0.2 and 2.5 MeV,the smaller the effective atomic number of the multi-element material is,the higher the saturation values of the albedo factors *** larger the incidence angle of the gamma ray is,the greater the saturation value of the gamma albedo factor,saturation reflection thickness,and average saturation energy of the reflected gamma photons are.