平面型HPGe探测器影响γ谱峰峰位的各种效应研究  

Investigation of Effects to the Peak Positions of γ Ray Photo Peaks

作　　者：张天保[1] 彭良强[1] 陈红民[1] 魏龙[1] 孟伯年[2] 

机构地区：[1]中国科学院高能物理研究所 [2]中国原子能科学研究院

出　　处：《核电子学与探测技术》1999年第5期326-332,340,共8页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金;中国科学院"九五"基金

摘　　要：用１９２Ｉｒ、８５Ｓｒ和１３７Ｃｓ等放射源在ｅＶ水平上研究平面型ＨＰＧｅ探测器影响γ谱峰峰位的各种效应，包括收集电场效应，放射源位置效应，射线加合和堆积效应等，讨论了这些效应的修正问题。利用单γ峰和加合峰峰位差异推测了探测器本身的非线性偏离曲线。Various effects to the peak positions in γ spectra, including the electric field effect inside a detector, summing and pile up effects between γ lines and the positional effect from the radioactivity source location etc., have been investigated at eV level for a plana type HPGe detector by using 192 Ir, 85 Sr and 137 Cs sources. Revision for the effects is discussed and the non linearity curve of HPGe detector itself has been derived based on the different values between peak positions of single γ peaks and sum peaks.

关 键 词：高纯锗 探测器 γ射线峰位 HPGE Γ谱仪 

分 类 号：TL817.2[核科学技术—核技术及应用]