^(90)Sr的加速器质谱测量技术研究  

Study on ^(90) Sr Measurement with Accelerator Mass Spectrometry

作　　者：何明[1] 赵庆章[1] 张文慧[1] 何洪钰 刘建成[1] 胡畔 武绍勇[1] HE Ming;ZHAO Qingzhang;ZHANG Wenhui;HE Hongyu;LIU Jiancheng;HU Pan;WU Shaoyong(China Institute of Atomic Energy,Beijing 102413,China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《原子能科学技术》2021年第12期2382-2388,共7页Atomic Energy Science and Technology

基　　金：国家自然科学基金(11875326);国家财政部稳定支持研究经费(WDJC-2019-04);核能开发项目。

摘　　要：为开展^(90) Sr在核环境监测、医学示踪等领域的应用,本文基于中国原子能科学研究院的加速器质谱(AMS)装置开展了^(90) Sr的AMS测量方法研究。从负离子引出方法、AMS系统传输条件、Q3D磁谱仪的同量异位素分离技术和多阳极气体电离室的离子鉴别方法等对^(90) Sr的AMS测量技术进行了系统研究,有效排除了测量时的本底干扰,使得^(90) Sr的测量灵敏度达^(90) Sr/Sr=9.2×10-13,为开展基于^(90) Sr的应用奠定了基础。In order to carry out the applications of ^(90) Sr in the environment,medicine and other fields,the measurement method of ^(90) Sr with accelerator mass spectrometry(AMS)was developed.The AMS measurement method of ^(90) Sr is systematically studied from the negative ion extraction technique,the AMS system transmission conditions,the unique isobaric separation technology with Q3D magnetic spectrometer and the ion identification method with multi-anode gas ionization chamber.The interference is effectively eliminated and the measurement sensitivity for ^(90) Sr is ^(90) Sr/Sr=9.2×10^(-13).It lays a foundation for carrying out various applications.

关 键 词：^(90)Sr 加速器质谱 测量方法 

分 类 号：O571.1[理学—粒子物理与原子核物理]