小型PIPS探测头便携式α能谱仪设计  

The Development of a PortableαSpectrometer Based on Small PIPS Probe

作　　者：辛杰 杨悦 尤思梅 张保国[1] 王仁生 文万信[1] XIN Jie;YANG Yue;YOU Si-mei;ZHANG Bao-guo;WANG Ren-sheng;WEN Wan-xin(State Key Laboratory of Radiation Medicine and Protection,Soochow University,School of Radiation Medicine and Protection,Medical College of Soochow University,Suzhou Jiangsu 215123,China)

机构地区：[1]苏州大学放射医学与辐射防护国家重点实验室,苏州大学医学部放射医学与防护学院,江苏苏州215123

出　　处：《核电子学与探测技术》2021年第6期932-936,共5页Nuclear Electronics & Detection Technology

基　　金：国家重点研发计划(2016YFB0501303);江苏省海洋科技创新专项(HY2018-11);空间合作项目(TGWTYY08019);苏州市科技发展计划(SZS201720)资助。

摘　　要：基于离子注入型硅半导体(PIPS)探测器研制一套小型探头的α能谱仪原型机。该α能谱仪前端成形滤波电路采用商用模块,配以STM32单片机,组成模数转换及数据获取系统。该α能谱仪可测α能量范围为0.3-21 MeV;基于脉冲发生器测量,其能量本征分辨率可达0.5%,^(241)Amα放射源的能量分辨率为1.9%,最高采样可达40 kHz,满足一般便携式能谱仪的需求,适用于现场测量。A prototype of a portableαspectrometer based on small PIPS probe is designed and tested.The front-end electronics of this spectrometer is based on the mature commercial modules manufactured by Cremat.With STM32 as a microcontroller,the analog-digital conversion and the data acquisition system are developed.The dynamic range of this prototype for the alpha particles can be up to 0.3-21 MeV,with the test of pulse generator,its intrinsic resolution can reach 0.5%,the maximum counting rate can be up to 40 kHz.For the alpha particles of^(241)Am,the energy resolution in air atmosphere can reach 1.9%,which meets the requirements of the general portable energy spectrometer.

关 键 词：小型探头 PIPS α能谱仪 STM32 

分 类 号：TL817.2[核科学技术—核技术及应用]