A High Throughput 14C Accelerator Mass Spectrometer
A High Throughput 14C Accelerator Mass Spectrometer
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DOI：
10.1017/s0033822200063694
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发表时间：
1992
期刊：
影响因子：
8.3
通讯作者：
K. Purser
中科院分区：
文献类型：
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作者：
K. Purser
我目前的设计细节的串联加速器质谱仪，这已安装在国家海洋科学AMS设施在伍兹霍尔，马萨诸塞州，提供精确的14 C/13 C/12 C同位素比亚毫克大小的石墨样品的吞吐量>4000样品每年。一个独特的功能是能够在加速后同时测量所有三种同位素，以避免差异传输效应，并允许在线分馏校正和仪器健康状况诊断。使用从最近的样品制造的丝状石墨，我们已经建立了14 C离子的计数率在60-120 s-1之间。
I present design details of a tandem accelerator mass spectrometer, which has been installed at the National Ocean Sciences AMS Facility at Woods Hole, Massachusetts, to provide precision 14C/13C/12C isotopic ratios for sub-milligram-size samples of graphite with throughputs of >4000 samples per year. A unique feature is the capability for simultaneous measurement of all three isotopes after acceleration, to avoid differential transmission effects and to allow on-line fractionation corrections and diagnosis of instrument health. Using filamentous graphite fabricated from a recent sample, we have established the counting rate of 14C ions at between 60–120 s–1.