Development of a tritium accelerator mass spectrometer
Development of a tritium accelerator mass spectrometer
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DOI：
10.1109/23.12790
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发表时间：
1988-02
影响因子：
1.8
通讯作者：
J. Cutchin;S. King;G. Phillips;R. August;J. Gerber;C. Castaneda
中科院分区：
文献类型：
--
作者：
J. Cutchin;S. King;G. Phillips;R. August;J. Gerber;C. Castaneda
使用克罗克核实验室 (CNL) 的 76 英寸扇形聚焦回旋加速器开发了一种用于直接对氚进行原子计数的加速器质谱仪 (AMS)。海卫一被加速到 6.2 MeV，并在硅 Delta E-E 带电粒子望远镜中进行探测。使用检测到的最小样品实现了 2.4*10/sup -5/ 的检测效率，该样品含有 2.6 mBq (70 fCi) 的氚，T/H 比为 3.7*10/sup -13/。计数时间为 3 至 6 分钟，样本越小，所需时间越短。该技术大大减少了现有氚环境水平β衰变检测所需的计数时间和样本量。 >
An accelerator mass spectrometer (AMS) for direct atom counting of tritium has been developed using the Crocker Nuclear Laboratory's (CNL) 76-in sector-focused cyclotron. Tritons were accelerated to 6.2 MeV and detected in a silicon Delta E-E charged-particle telescope. A detection efficiency of 2.4*10/sup -5/ was achieved with the smallest sample detected, which contained 2.6 mBq (70 fCi) of tritium at a T/H ratio of 3.7*10/sup -13/. Counting times were 3 to 6 min, with smaller samples requiring less time. This technique greatly reduces counting times and sample sizes from that required in existing beta -decay detection of ambient levels of tritium. >