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.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
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
关键词
加速器质谱计
探测器
本底
铍10
Accelerator mass spectrometry(AMS)Detector Background Atomic ratio
