轴对称型BGO反康屏蔽探测器研制

Development of an axial symmetry type BGO anti-Compton shield detector

着重报告了自行研制的轴向对称型BGO反康屏蔽探测器的基本结构、抑制原理及其抑制性能的测试结果。测得60Coγ射线源的康普顿抑制系数在能区100～300、300～800、800～1100keV范围内分别为2.3、4.1和4.6,且峰总比为37%(对相对效率为30%的HPGe探测器)。

The basic structure, the suppression principle and measurement results of the suppressed performance for the axial symmetry type BGO antiCompton shield detector are reported in this paper. The Compton suppression factors (CSF) measured are about 2.3, 4.1 and 4.6 in the energy region of 100～300, 300～800 and 800～1100 keV respectively to γrays from a 60Co source. The peaktototal ratio is about 37%(for the relative efficiency 30% HPGe detector).