摘要
本文用 Monte Carlo方法研究了 Cs I∶Na转换屏中晶柱之间的粘连对其空间分辨特性的影响 ,给出了不同粘连程度下可见光在转换屏中的点扩展函数及相应的 MTF曲线 .通过几种不同粘连系数下模拟结果的比较可见 ,要获得一个高分辨的转换屏应尽可能减小晶柱之间的粘连 .对于一个实际的转换屏其粘连系数至少应在 40 %以下 ,最好控制在 2 0
The effect of conglutination of columns in CsI∶Na scintillation layer on its resolution properties was studied by Monte Carlo method.On the base of computing the point spread functions of light photons in CsI∶Na layer with different conglutination coefficient,the MTF curves were figured out.The comparision of the simulated results give a conclusion that the conglutination should be minished as it could be as possible in order to get a high resolution scintillation screen.For a practical scintillation layer,the conglutination should be at least less than 40%,better within 20%.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2001年第10期1214-1217,共4页
Acta Photonica Sinica
基金
国家自然科学基金资助项目 (695 480 0 2 )
