空间硬X射线探测器的本底抑制  

Background Rejection in Space Hard X-ray Detector

作　　者：马涛[1] 常进[1] 杭桓荣[1] 

机构地区：[1]中国科学院紫金山天文台,南京210008

出　　处：《天文学报》2003年第2期215-221,共7页Acta Astronomica Sinica

基　　金：国家自然科学基金(9883002;1017302)

摘　　要：空间硬X射线探测器的本底是影响其性能的关键因素,其成分比较复杂。讨论本底抑制的几种方法,并对常用的几种屏蔽材料通过实验和计算进行比较,给出实验了结果。The background level is an important aspect for a hard X-ray detector. The methods of background rejection are experimentally studied in this paper. We show that the efficiency of background rejection (lab background) can be 66% with a 3-sides anti-coincidence. Several materials to shield background (by high-energy photons) are also discussed in this paper.

关 键 词：空间硬X射线探测器 本底抑制 航天器 屏蔽材料 

分 类 号：P172.2[天文地球—天文学]