回旋加速器质谱技术中氚和氦-3粒子的探测和鉴别  

Simultaneous acceleration and detection of ~3H and ~3He in cyclotron mass spectrometry

作　　者：周善铸[1] 潘浩昌[1] 林俊英[1] 吴介征[1] 姚崇觉 顾根祥[1] 李鸿贵[1] 

机构地区：[1]中国科学院上海原子核研究所,上海201800

出　　处：《核技术》1993年第3期169-173,共5页Nuclear Techniques

摘　　要：在利用回旋加速器质谱技术进行氚断代的测量中,工作气体是电解水样品时收集到的含氚氢气,并混入少许一定量的空气。空气中的微量~3He和样品中的~3H同时加速并被用作参考标准以监督加速器的束流变化。描述了利用金硅面垒探测器望远镜和铝吸收箔的组合来探测和鉴别~3H和~3He的实验方法和结果。The cyclotron in SINR has been used as a cyclotron mass spectrometer for tritium dating. The gas introduced into the ion source was 3H- containing hydrogen which collected from electrolysis of water samples and mixed with a certain amount of air in which trace 3He was used as a reference. 3H and 3He ions were accelerated simultaneously. The separation and identification of these two ion species was made by a combination of silicon detector telescope and aluminium absorption foil.

关 键 词：探测 鉴别 质谱 加速器 氚 氦3 

分 类 号：TL817.4[核科学技术—核技术及应用]