CAJ | 학술논문

综述了目前计算X射线在材料中通量的几种方法:利用质量衰减系数直接计算的理论方程和描述粒子运动统计规律的蒙特卡罗方法.分别采用理论方程、蒙特卡罗软件MCNP4C和EGSnrc三种途径计算了黑体谱X射线穿过几种常用复合材料的透射率和透射谱,根据计算过程和计算结果,结合相关参考文献,分析比较了理论方程与蒙特卡罗软件之间、两种蒙特卡罗软件MCNP4C和EGSnrc之间的差异.
종술료목전계산X사선재재료중통량적궤충방법:이용질량쇠감계수직접계산적이론방정화묘술입자운동통계규률적몽특잡라방법.분별채용이론방정、몽특잡라연건MCNP4C화EGSnrc삼충도경계산료흑체보X사선천과궤충상용복합재료적투사솔화투사보,근거계산과정화계산결과,결합상관삼고문헌,분석비교료이론방정여몽특잡라연건지간、량충몽특잡라연건MCNP4C화EGSnrc지간적차이.
The computational methods of X-ray fluence in compound, including theoretical equation with mass attenuation coefficient and Monto carlo code,were reviewed. The transmission rates and transmis-sion spectrum of X-ray through several compounds were caculated using theoretical equation, MCNP4C and EGSnrc respectively. According to the process and the results, combined with relative references, the difference between theoretical equation and Monto carlo code, and between MCNP4C and EGSnrc were analysed.