α、β粒子在钝化注入平面硅探测器中的脉冲形状分析  

Pulse Shape of Alpha and Beta Particles in Passivated Implanted Planer Silicon Detector

作　　者：田新[1] 肖无云[1] 王善强[1] 梁卫平[1] 

机构地区：[1]防化研究院第二研究所,北京102205

出　　处：《核电子学与探测技术》2011年第11期1255-1258,共4页Nuclear Electronics & Detection Technology

摘　　要：利用钝化注入平面硅探测器(PIPS)测量α、β时,某些情况下只通过能量甄别无法区分这两种粒子,而通过脉冲形状甄别的方法可以很好地解决这一问题。通过研究α、β粒子在PIPS中脉冲形状不同的机制,分析了脉冲形状的特征;测量分析了一款PIPS探测器的电压脉冲上升时间及其随偏压的变化;分析得出了对PIPS探测器进行脉冲形状甄别的基本条件,为利用脉冲形状对α、β进行甄别提供了参考。There is a problem of cross counting of alpha and beta when samples are measured sometime.In order to resolve the problem,the article researches into the range of alpha and beta particles in PIPS derectors.The difference in range results in difference in charge collecting time,so the pulse shape is also different.The characters of pulse shape of alpha and beta particles in PIPS derectors are studied.The rise time of voltage signal is surveied and the change of rise time in different bias is analysed.Results of the research provied some useful reference to pulse shape discrimination of alpha and beta particles in PIPS derectors.

关 键 词：α、β粒子 钝化注入平面硅探测器 脉冲形状 

分 类 号：TL81[核科学技术—核技术及应用]