摘要
在工业CT设计中,为了选择闪烁体的种类和几何尺寸,需要知道韧致辐射光子穿透闪烁体的能量和通量分布。根据Monte Carlo模拟光子输运过程的理论,模拟了2MeV、9MeV韧致辐射光子在NaI、CsI、CdWO4闪烁体内的输运过程,讨论了这类光子穿透闪烁体后光斑展宽问题和能量及通量的分布。研究表明,该方法可准确直观地定量分析韧致辐射光子在闪烁体内任意位置的能量和通量分布规律。
In the design of industrial CT, the knowledge of energy and flux distributions for bremsstrahlung photons through crystals is necessary to select scintillator's type and dimension. Based on the principle of Monte Carlo simulation of photon transport, the transport processes of 2 MeV and 9 MeV bremsstrahlung in Nal, Csl and CdWO4 scintillators have been simulated. Light spots and energy and flux distributions of bremsstrahlung have been presented.The results show that the method can accurately and visually determine both on energy and flux distributions of bremsstrahlung photons in any position in the scintillator.
出处
《核技术》
CAS
CSCD
北大核心
2004年第7期551-556,共6页
Nuclear Techniques
基金
中国工程物理研究院基金资项目(2000z0302)
