摘要
在环境样品放射性比活度测量中,放射性水平低,提高探测效率显得尤为重要。选择样品盒几何形状对提高探测效率具有明显的效果。论文利用MCNP程序模拟计算方法,得出了在HPGe探测器测量环境放射性样品中,不同样品质量下,探测效率最大时对应的马林杯样品和圆柱形样品盒几何形状,其结果可为环境样品测量时选取样品质量和样品盒形状提供依据。
The radioactive level is very low in the radioactivity measurement of environment samples, so it is particularly important to improve the detection efficiency. The paper describes that samples of different mass are filled in the marinelli bearker and the cylin - drical sample boxes, and the geometric parameters of boxes are calculated using MCNP program to maximize the detection effieieneies of HPGe detector. The results can provide the reference for the selection of the sample mass and sample box shape when measuring environment samples.
出处
《核电子学与探测技术》
CAS
CSCD
北大核心
2013年第1期53-56,73,共5页
Nuclear Electronics & Detection Technology
关键词
MCNP
马林杯
样品盒
探测效率
MCNP
marinelli bearker
sample box
detection efficiency
