| 3 MV加速器质谱测量36Cl |
| |
| 引用本文： | 王慧娟,管永精,张伟,姜山,何明.3 MV加速器质谱测量36Cl[J].原子能科学技术,2012,46(Z1):522-525. |
| |
| 作者姓名： | 王慧娟 管永精 张伟 姜山 何明 |
| |
| 作者单位： | 1.广西大学 物理科学与工程技术学院，广西 南宁530004；2.中国原子能科学研究院 核物理研究所，北京102413 |
| |
| 基金项目： | 国家自然科学基金项目资助，广西自然科学基金资助项目 |
| |
| 摘 要： | 在端电压为3 MV的AMS装置上实现36Cl及其他中重核素的高灵敏测量是AMS技术发展的重要方向之一。为进一步提高充气飞行时间探测方法中36S的压低能力，本文研究了36S和36Cl在P10、异丁烷和丙烷气体中的能量歧离和角度歧离。在32 MeV的入射能量下测量了几个地下水样品中36Cl的JP2]含量，测量结果与72 MeV能量下的测量结果相符。测量结果表明，采用充气飞行时间探测方法在3 MV的串列加速器上测量36Cl时，探测限为36Cl/Cl≈10-14，当样品中36Cl/Cl≈10-13时测量不确定度为30%。
|
| 关 键 词： | 加速器质谱 同量异位素 粒子鉴别 充气飞行时间 |
36Cl AMS Measurement With 3 MV Tandem Accelerator |
| |
| WANG Hui-juan
,
GUAN Yong-jing
,
ZHANG Wei
,
JIANG Shan
,
HE Ming.36Cl AMS Measurement With 3 MV Tandem Accelerator[J].Atomic Energy Science and Technology,2012,46(Z1):522-525. |
| |
| Authors: | WANG Hui-juan GUAN Yong-jing ZHANG Wei JIANG Shan HE Ming |
| |
| Affiliation: | 1.College of Physics Science and Technology, Guangxi University, Nanning 530004, China;2.China Institute of Atomic Energy, P. O. Box 275-80, Beijing 102413, China |
| |
| Abstract: | Developing the 36Cl and other medium heavy isotopes measurement at 3 MV AMS facilities is one of the vital trends in AMS measurement. To further increase suppression factor of 36S, the energy loss straggling and angular straggling of 36Cl and 36S ions in various counter gases (P10, isobutane and propane) were investigated. Some water samples were measured with the energy of 32 MeV, the results are in good agreement with the result by ion energy of 72 MeV. The results indicate that the detection limit of 36Cl with 3 MV AMS facility is approximately 36Cl/Cl≈10-14, and the uncertainty is 30% for the sample with isotopic ration 36Cl/Cl≈10-13. |
| |
| Keywords: | accelerator mass spectrometry isobar particle identification gas-filled time-of-flight |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《原子能科学技术》浏览原始摘要信息 |
|
点击此处可从《原子能科学技术》下载全文 |
