郭之虞
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郭之虞
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论文成果
Improvements of PKUAMS for precision 14C analysis of the project of Xia-Shang-Zhou chronology. Nuclear Instruments and Methods in Physics Research B172 (2000) 70-74.
发布时间：2024-09-14点击次数：
影响因子：
1.186
DOI码：
10.1016/S0168-583X
发表刊物：
Nuclear Instruments and Methods in Physics Research B
关键字：
AMS
Ratio measurement
Upgrade
Improvement
Precision
摘要：
To meet the requirements of the Xia–Shang–Zhou Chronology project, an upgrade of the AMS facility at Peking University has been carried out, commencing in 1996, and a new sample preparation system with high efficiency and low memory has been set up in the Department of Archaeology. A NEC MC-SNICS ion source has been installed and the injection system has been reconstructed. Computer control of the beam line has been implemented using Group 3 ControlNet, and a new data acquisition system has been developed. The alignment and vacuum of the beam line have also been improved. The upgraded system was commissioned in 1998. Subsequent experience has led to efficient procedures for beam tuning and 14C/13C measurement. A precision of 0.5% in the 14C/13C ratio has been achieved. Many samples have now been measured for the Xia–Shang–Zhou Chronology project.
论文类型：
期刊论文
文献类型：
J
卷号：
172
期号：
1-4
页面范围：
70-74
是否译文：
否
发表时间：
2000-10-01
收录刊物：
SCI