| Primary result of 236U measurement with accelerator mass spectrometry at CIAE |
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| 作者姓名： | 王祥高 何明 石国柱 李朝历 王伟 张大伟 黄春堂 沈洪涛 吴绍雷 贺国珠 武绍勇 姜山 |
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| 作者单位： | China Institute of Atomic Energy, Beijing 102413, China; College of Physics Science and Technology, Guangxi University, Nanning 530004, China |
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| 基金项目： | Supported by NSAF （National Nature Science Fundation-China Academy of Engineering Physics Fundation） （10576040）
We acknowledge Weizhi Tian from CIAE for his helpful discussion. |
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| 摘 要： | The rare isotope ^236U has a half-life of 2.342（3）×107 years, and is produced principally by thermal neutron capture on ^235U. The isotopic atom ratio of ^236U/^238U depends on the integral thermal neutron flux received by the material of interest. ^236U is potentially useful as a ＂fingerprint＂ for indicating the presence of neutron-irradiated uranium usually originating from nuclear activity. By extracting negative molecular ion UO^- from the uranium oxide target, simulating the ^236U^16O^- beam transport with ^238U^16O^- and ^208Pb2^16O^- pilot molecular ion beam, transporting the ^236U-containing ion beam with a high resolution injection magnet analyzer and electrostatic analyzer system, and finally identifying and detecting ^236U with a time-of-flight detector （TOF）, a method for AMS （Accelerator Mass Spectrometry） measurement of ^236U was established on the HI-13 Accelerator AMS system at China Institute of Atomic Energy.
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| 关 键 词： | 中国原子能科学研究院 加速器质谱法 质谱测量 飞行时间探测器 同位素比值 离子束注入 小学 分子离子 |
| 收稿时间： | 2009-3-3 |
| 修稿时间： | 2009-4-29 |
Primary result of ^236U measurement with accelerator mass spectrometry at CIAE |
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| WANG Xiang-Gao,HE Ming,SHI Guo-Zhu,LI Chao-Li,WANG Wei,ZHANG Da-Wei,HUANG Chun-Tang,SHEN Hong-Tao,WU Shao-Lei,HE Guo-Zhu,WU Shao-Yong,JIANG Shan.Primary result of 236U measurement with accelerator mass spectrometry at CIAE[J].High Energy Physics and Nuclear Physics,2010,34(2):192-197. |
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| Authors: | WANG Xiang-Gao HE Ming SHI Guo-Zhu LI Chao-Li WANG Wei ZHANG Da-Wei HUANG Chun-Tang SHEN Hong-Tao WU Shao-Lei HE Guo-Zhu WU Shao-Yong JIANG Shan |
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| Institution: | [1]China Institute of Atomic Energy, Beijing 102413, China [2]College of Physics Science and Technology, Guangxi University, Nanning 530004, China |
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| Abstract: | ^236U, accelerator mass spectrometry, isotopic ratio |
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| Keywords: | ^236U accelerator mass spectrometry isotopic ratio |
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