摘要
采用MCNP5模拟与数学计算相结合,并利用探测器晶体几何的轴对称性,建立一种HPGe探测器的无源效率刻度方法。基于此方法的计算程序在使用过程中完全脱离MCNP5,运算时间为1～60s,可实现点源和同轴圆柱体源的效率刻度,能量范围为50keV～3MeV。程序计算结果与实验数据以及MCNP5直接模拟结果比较,误差分别不超过12%和7%,证明方法可行。
Combining MCNP5 simulation with mathematical computation and utilizing the axial symmetry of detector-crystal geometry, a source-less efficiency calibration method to an HPGe detector is established. The computer code based on this method can calibrate the efficiency of point sources and coaxial cylinder sources without need for MCNP5 in its using process and its runtime is 1 s-1 min. The applicable energy range is 50 keV-3 MeV. Comparing self-written coders result with experimental data and MCNPS＇s simulation result, the error is below 12 percent and γ percent respectively, which proves the method is feasibility.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2013年第1期201-206,共6页
High Power Laser and Particle Beams
基金
国家自然科学基金项目(11035002,11075091,11175099)
