Monte Carlo simulation of the exposure factor

作     者：张涛 刘义保 杨波 吴和喜 顾金虎 

作者机构：Key Laboratory of Nuclear Resources and Environment (East China Institute of Technology)Ministry of Education School of Nuclear Engineering and TechnologyEast China Institute of Technology 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2009年第18卷第6期

页      面：2217-2222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：Project supported by the National Natural Science Foundation of China (Grant No 10647109) the Foundation for Key Programof Ministry of Education,China (Grant No 208067) 

主　　题：exposure factor Geant4 Monte Carlo simulation free-air ionization chamber 

摘      要：In this paper, we simulate the exposure factor by a simple model of a flee-air ionization chamber with the Monte Carlo programme Geant4. Special emphasis is placed on the discussion of the exposure factor related to parameters of the chamber model. The reason for the variation in exposure factor with incident ray energy is also analysed in terms of reaction cross section for different types of reactions. The obtained results indicate that our simulation is accurate in the calculation of the exposure factor and can serve as a reference in designing air ionization chambers.