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XIANG Yong-chun, GONG Jian, LI Wei, BIAN Zhi-shang, HAO Fan-hua, WANG Hong-xia, WANG Qian. Decreasing Background of 37Ar Measurement System[J]. Atomic Energy Science and Technology, 2009, 43(5): 477-480. DOI: 10.7538/yzk.2009.43.05.0477
Citation: XIANG Yong-chun, GONG Jian, LI Wei, BIAN Zhi-shang, HAO Fan-hua, WANG Hong-xia, WANG Qian. Decreasing Background of 37Ar Measurement System[J]. Atomic Energy Science and Technology, 2009, 43(5): 477-480. DOI: 10.7538/yzk.2009.43.05.0477
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Decreasing Background of 37Ar Measurement System

  • China Academy of Engineering Physics, P.O. Box 919-214, Mianyang 621900, China

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  • Received Date: January 02, 2008
  • Revised Date: October 31, 2008
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  • The background components of the 37Ar measurement system were analyzed from their radioactive origins. Both the backgrounds of the previous shield and the new improved one were calculated by MCNP code. According to the scene of using the 37Ar measurement system, the main work was focused on optimizing its structure and machining. The background of the improved shield falls to 75% that of the previous one. The test results are consistent with the calculated results. So the detection sensitivity of the 37Ar measurement system is increased further.
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    • References (3)
  • [1]
    [1] 古当长. 放射性核素活度测量的方法和技术[M]. 北京：科学出版社，1994：324-335.
    [2]
    向永春，龚建，李伟，等. 37Ar测量系统的研制与能谱测量方法研究[J]. 物理学报，2008，57(2)：784-788.
    XIANG Yongchun, GONG Jian, LI Wei, et al. Developing a system of measuring 37Ar by spectrum method[J]. Acta Physica Sinica, 2008, 57(2): 784-788(in Chinese).
    [3]
    向永春，龚建，李伟，等. 气体正比计数管测量37Ar的效率研究[J]. 核技术，2007，30(10)：828-831.
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