| 反符合法测量152Eu放射性溶液的活度 |
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| 引用本文： | 杨丽艳,汪建清,姚顺和,杨巧玲,陈细林,姚艳玲,贾雪文,张一云.反符合法测量152Eu放射性溶液的活度[J].原子能科学技术,2008,42(4):296-299. |
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| 作者姓名： | 杨丽艳 汪建清 姚顺和 杨巧玲 陈细林 姚艳玲 贾雪文 张一云 |
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| 作者单位： | 1.四川大学 ;物理科学与技术学院，四川 ;成都 ;610064； ;2.中国原子能科学研究院 ;放射性计量测试部，北京 ;102413 |
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| 摘 要： | 152Eu的衰变纲图复杂，包括72.1%的EC衰变和27.9%的β-衰变，衰变子体退激过程中又放出140多条γ射线，其中，12条能量处在122~1408keV之间，是主要γ射线。152Eu常用于HPGeγ谱仪能量校准和效率校准等，152Eu的放射性活度准确测量极为重要。本工作利用4πβ(PPC)-γ(HPGe)反符合测量装置对152Eu的活度进行绝对测量,并与4πβ-4πγ符合效率外推法和HPGeγ谱仪、4πγ高气压电离室测量的结果进行了比较。这几种方法的测量结果在不确定度范围内一致。
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| 关 键 词： | 4πβ(PPC)-γ(HPGe)反符合法 152Eu" target="_blank">152Eu')">152Eu 活度 |
| 文章编号： | 1000-6931(2008)04-0296-04 |
| 收稿时间： | 2007-11-09 |
| 修稿时间： | 2007年11月9日 |
Activity Standardization of 152 Eu by Anti-coincidence Method |
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| YANG Li-yan,WANG Jian-qing,YAO Shun-he,YANG Qiao-ling,CHEN Xi-lin,YAO Yan-ling,JIA Xue-wen,ZHANG Yi-yun.Activity Standardization of 152 Eu by Anti-coincidence Method[J].Atomic Energy Science and Technology,2008,42(4):296-299. |
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| Authors: | YANG Li-yan WANG Jian-qing YAO Shun-he YANG Qiao-ling CHEN Xi-lin YAO Yan-ling JIA Xue-wen ZHANG Yi-yun |
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| Affiliation: | 1.School of Physics Science and Technology, Sichuan University, Chengdu 610064, China; 2. China Institute of Atomic Energy, P.O. Box 275-20, Beijing 102413, China |
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| Abstract: | 152Eu has a complex decay scheme, which decays 27.9% by β-emission and 72.1% by electron capture. The nuclide emits more than 140 γ-rays which include 12 main γ-rays in the range of 122-1 408 keV. 152Eu is an important radionuclide for the energy and efficiency calibration of the HPGe gamma-spectrometers. It is very important to study the absolute measurement methods of the activity. A solution of 152Eu was absolutely standardized by the 4πβ(PPC)-γ(HPGe) anti-coincidence counting system and the results were compared with that by 4πβ-4πγ coincidence counting efficiency extrapolation, HPGe gamma-spectrometer and 4πγ high pressurized ionization chamber. It is shown that all the results from the above methods are in good agreements within the uncertainties. |
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| Keywords: | 4πβ(PPC)-γ(HPGe) anti-coincidence 152Eu activity |
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