摘要
现有便携式谱仪无法同时对α-β-γ射线进行测量,这使得相关人员对α-β-γ混合场景的评估与处理存在不便,因此我们研制了一套便携式α-β-γ谱仪以解决上述问题.谱仪采用PIPS探测器和LaBr3(Ce)探测器分别对α-β粒子和γ射线进行测量,获取高分辨的能谱.经测试,谱仪的α能量分辨率小于140keV(5.486 MeV,0.1atm),α表面发射率响应67.34%(241Am),β表面发射率响应19.13%(90Sr-90Y),γ能量分辨率小于3.4%(662keV).因此谱仪可同时测量α-β-γ射线并获取高分辨的能谱,有助于相关人员对测量现场做出快速准确的评估与处理.
The existing portable spectrometer cannot measure theα-β-γray at the same time,which makes the evaluation and processing of theα-β-γmixed scene inconvenient,so a portableα-β-γspectrometer is developed to solve the problem.The spectrometer uses a PIPS detector and a LaBr3(Ce)detector to measureα-βparticles andγ-rays,respectively,to obtain a high-resolution energy spectrum.The main properties of the spectrometer such asαenergy resolution,α/βsurface emissivity response,γenergy resolution and temperature stability were tested.Theαenergy resolution is less than 140keV(5.486meV,0.1atm),surface emissivity response ofαparticles is 67.34%(241Am),surface emissivity response ofβparticles is 19.13%(90Sr-90Y),andγenergy resolution is less than 3.4%(662keV).Therefore,the spectrometer can simultaneously measure theα-β-γrays and obtain the high resolution energy spectrum,which is helpful for the related personnel to make rapid and accurate evaluation and treatment of the measurement site.
作者
刘怡文
赵朝阳
王玉东
熊浩
杨锋
董春辉
王忠海
周荣
杨朝文
LIU Yi-Wen;ZHAO Chao-Yang;WANG Yu-Dong;XIONG Hao;YANG Feng;DONG Chun-Hui;WANG Zhong-Hai;ZHOU Rong;YANG Chao-Wen(Key Laboratory of Radiation Physics and Technology,Ministry of Education,College of Physics,Sichuan University,Chengdu 610064,China)
出处
《四川大学学报（自然科学版）》
CAS
CSCD
北大核心
2020年第5期947-952,共6页
Journal of Sichuan University(Natural Science Edition)
基金
国家自然科学基金(11475121)。
