便携式2π粒子发射率测量系统研制  

The Development of a Portable 2π Particle Emission Rate Measurement System

作　　者：贺海江[1,2] 李泽西[2,3] 梁珺成[2] 侯胜利[1] 杨志杰[1,2] 杨豪[1] HE Hai-jiang LIZe-xi LIANGJun-cheng HOU Sheng-li YANG Zhi- jie YANG Hao(School of Geophysics and Information Technology, China University of Geosciences, Beijing 100083, China National Institute of Metrology, Beijing 100029, China University of South China, Hengyang Hunan 421001, China)

机构地区：[1]中国地质大学(北京)地球物理与信息技术学院,北京100083 [2]中国计量科学研究院,北京100029 [3]南华大学,湖南衡阳421001

出　　处：《核电子学与探测技术》2016年第11期1172-1177,共6页Nuclear Electronics & Detection Technology

基　　金：国家自然科学基金(11505179)资助

摘　　要：为满足现场测量需求,研制了便携式2π粒子发射率测量系统。系统基于流气式多丝正比计数器,设计了多道脉冲幅度分析处理模块,编制了上位机能谱测量软件,实现α、β平面源能谱的实时显示和能谱数据的离线分析处理,方便了β外推中的应用。实验结果表明:系统工作性能稳定,α能谱能量线性较好,实测发射率与标准值能够在不确定度范围内一致,结果偏差小于1%,能够满足2πα、2πβ粒子表面发射率准确测量的需求,为现场粒子发射率量值传递装置的建立奠定了基础。In order to meet the needs of field measurement, a portable 2π particle emissivity measurement system was developed. Based on the multi -wire proportional counter, it has designed and implemented a multi - channel pulse height analysis processing module and compiled the high performance spectrum measurement soft- ware. It not only achieves the real - time display of α, β plane source energy spectrum, but is also capable of analyzing and processing the spectrum data for offline, which greatly facilitates the β extrapolation applications. The experimental results show that the performance of the system is stable and the energy spectrum of α spectrum is good, the measured emissivity and standard value are consistent in the uncertainty range, the result is less than 1%. It can meet the demand of 27πα, 2πβ surface emissivity particles accurately measurement. It lays the foundation for the establishment of the situ partitle emissivity value transfer system.

关 键 词：正比计数器 能谱 粒子发射率 多道 β外推 现场测量 

分 类 号：TB98[一般工业技术—计量学]