原子能科学技术2011，Vol.45Issue(11)：1356-1360,5.
圆柱形正比计数管倍增研究
Study of Multiplication in Cylindrical Proportional Counter
陈国云 1魏志勇 2辛勇 1方美华 2张紫霞 1黄国庆 1赵书毅2
作者信息
- 1. 南京航空航天大学,江苏南京210016
- 2. 南昌大学物理系,江西南昌 330031
- 折叠
摘要
Abstract
Electrical field in cylindrical proportional counter (PC) was analyzed by using Diethorn formula. It can be seen that multiplication in homemade cylindrical PC happens within the range of less than 30 μm from anode. The lowest operating voltage of the PC is 370-670 V, and it increases with the diameter of both anode and cathode, but changes slowly with the latter. A thinner anode can lead to stronger field around itself, and a lower working pressure will lead to larger mean free path. Both of them can improve the multiplication factor due to the generation of more and more secondary electrons in PC. Selecting a thin anode and low working pressure can not only reduce the lowest operating voltage, but also optimize the performance of amplification of PC, which makes it more suitable to measure radiation dose in deep space.关键词
正比计数管/最小工作电压/工作气压/倍增因子Key words
proportional counter/ the lowest operating voltage/ working pressure/ multiplication factor分类
能源科技引用本文复制引用
陈国云,魏志勇,辛勇,方美华,张紫霞,黄国庆,赵书毅..圆柱形正比计数管倍增研究[J].原子能科学技术,2011,45(11):1356-1360,5.
