强激光与粒子束2012，Vol.24Issue(2)：463-466,4.DOI:10.3788/HPLPB20122402.0463
X射线硬化对面密度测量灵敏度的影响
Effects of X-ray beam hardening on measurement sensitivity of areal density
摘要
Abstract
Hardening trends of X-ray beams from three X-ray machines of different energies traversing aluminium plates of different thickness were simulated by means of Monte-Carlo method, as well as the processes of areal density measuring,and cor-responding experimental research was done. The effects of X-ray beams hardening on the measurement sensitivity were analyzed. For the X-ray beams from X-ray machine the same energy, X-ray beams harden more with the areal density increasing, which brings about the reduction of the measurement sensitivity; The lower the energy of photons is , the more quickly the measurement sensitivity reduces, and vice versa. For a certain areal density range, when X-ray photons can just traverse the part of the maxi-mum areal density by adjusting the X-ray tube voltage, the best measurement sensitivity can be obtained.关键词
X射线透视法/射线硬化/面密度/测量灵敏度Key words
X-ray transmission method/X-ray beam hardening/areal density/measurement sensitivity分类
数理科学引用本文复制引用
朱鹏飞,叶雁,李泽仁,罗振雄,刘振清,李作友,朱巍,李军..X射线硬化对面密度测量灵敏度的影响[J].强激光与粒子束,2012,24(2):463-466,4.基金项目
国家空间碎片专题研究基金项目(KJSP09203) （KJSP09203）
