AMS－^（10）Be粒子的探测和鉴别  

DETECTlON AND IDENTIFICATlON OF￣(10)Be PARTICLES FOR AMS

作　　者：刘洪涛[1] 汪建军[1] 刘克新[1] 李坤[1] 郭之虞 张如菊 

机构地区：[1]北京大学技术物理系

出　　处：《原子能科学技术》1994年第6期551-555,共5页Atomic Energy Science and Technology

基　　金：国家自然科学基金

摘　　要：将￣（１０）Ｂ离子吸收室和￣（１０）Ｂｅ探测器在结构上合为一个整体，用一种气体一个入射窗有效地探测了ＡＭＳ￣（１０）Ｂｅ粒子。用Ｈａｖａｒ膜替代Ｍｙｌａｒ膜作入射窗，明显地降低了本底，相应的￣（１０）Ｂｅ／￣９Ｂｅ原子比值达到约５×１０（－１３），将几个样品的￣（１０）Ｂｅ／Ｂｅ测量值与已知值进行了比较。The particles of AMS-￣(10)Be are detected effectivelly with a detector into which ￣(10)B ion cham-ber is incorporated using one gas and one entrance window. The Be background is reduced bymeans of Havar foil instead of Mylar as entrance window. The resulting background typically cor-responds to a ￣(10)Be/￣9Be atomic ratio of about 5 × 10￣(-13) . The measured ￣(10)Be/￣9Be ratios are comparedwith nominal values for tseveral samples.

关 键 词：加速器质谱计 探测器 本底 铍10 

分 类 号：TL817.4[核科学技术—核技术及应用]