采用Ta—Al复合金属电子转换靶设计了一种厚窗真空型康普顿探测器，其对1.25 MeV γ射线的探测效率达到7.85×10-3 e/γ，比Fe发射极探测器的探测效率高出约2.5倍。探测器具有良好的封装加工和静态真空保持特性，可用于强流脉冲γ射线测量场合。

A newly designed vacuum Compton gammaray detector with Ta－Al cladmetal electron converter plate is described. The detecting efficiency for 1.25 MeV gammaray is 7.85×103 e/γ, which is 2.5 times higher than that with Fe converter plate. The designed detector has the merits of well processed and static vacuum keeping and can be used for intense pulsed gamma ray detecting.