粒子望远镜对运动放射源绝对探测效率的研究  

STUDY OF ABSOLUTE EFFICIENCY OF PARTICLE TELESCOPE FOR DETECTING THE MOVING SOURCE

作　　者：胡志强[1] 徐晓冀[1] 

机构地区：[1]中国科学院近代物理研究所

出　　处：《原子能科学技术》1994年第5期396-402,共7页Atomic Energy Science and Technology

基　　金：国家自然科学基金

摘　　要：文章描述了在延迟粒子谱学研究中所常用的氦喷咀系统的粒子望远镜，并对运动的放射源的绝对探测效率进行计算。考虑具有一定分布的放射性面源，计算光栏和放射源偏离中心位置对探测效率的影响。将计算过程编制成计算机程序以处理实验数据。The calculation about absolute efficiency of particle telescope used in helium-jet system,which is employed usually in the study of beta-delayed particle spectroscopy,for detecting ra-dioactive moving source is described.The radioactive distribution of area source is considered.The influence of collimators and source deviation from center position on the detection efficiency isalso evaluated.The calculation is translated to computer program. With the program,the experi-mental data are processed and the good...

关 键 词：质子滴线 氦喷咀 探测效率 面源 光栏 计数率 

分 类 号：TL817.9[核科学技术—核技术及应用]