A PRECISION C-14 ACCELERATOR MASS-SPECTROMETER

被引：35

作者：

PURSER, KH

SMICK, TH

PURSER, RK

机构：

[1] US-AMS Corporation, Topsfield

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1990年 / 52卷 / 3-4期

关键词：

D O I：

10.1016/0168-583X(90)90418-T

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Details will be presented of a high throughput, automated accelerator mass spectrometer. The system, which has been designed to provide C-14/C-12 and C-13/C-12 isotopic ratio information for milligram samples of graphite, can provide data with accuracies comparable to that which can be achieved using the techniques of precision beta-decay counting. As many as sixty bar-coded samples/standards are loaded into the system at one time, which can operate completely unattended and collect and analyze data for at least one day. By using dual sources, the throughput of the instrument will be close to 5000 samples per year. C-14 backgrounds are expected to be well below that of sample contamination, and should allow measurements to be made on samples having an age of more than 60 000 years.

引用

收藏

页码：263 / 268

页数：6

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