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  • [Appl Radiat Isot.] A low background gamma-ray spectrometer with a large well HPGe detector.

    KINS / 변종인*

  • 출처
    Appl Radiat Isot.
  • 등재일
    2020 Feb
  • 저널이슈번호
    156:108932. doi: 10.1016/j.apradiso.2019.108932. Epub 2019 Oct 9.
  • 내용

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    Abstract
    A low background gamma-ray spectrometer was established in a ground-based laboratory. It consists of a large well (diameter: 28 mm, depth: 40 mm) HPGe detector and an anti-cosmic shielding system. The photon background of the present system was measured with and without the anti-cosmic mode, and compared with each other, and the detection capability with the detection efficiency calibration was estimated. The background with passive and active shields for the energy region between 40 keV and 3000 keV was reduced by 78% compared to one with just passive shield. The full energy peak efficiency for cylindrical samples with three different heights and the minimum detectable activity of the present system were tabulated for main radionuclides to be measured in environmental monitoring.

     


    Author information

    Byun JI1, Hwang HY2, Yun JY3.
    1
    Korea Institute of Nuclear Safety, 62 Gwahak-ro Yuseong-gu, Daejeon, 34142, Republic of Korea. Electronic address: k975bji@kins.re.kr.
    2
    Mokwon University, 88 Doanbuk-ro Seo-gu, 35349, Daejeon, Republic of Korea.
    3
    Korea Institute of Nuclear Safety, 62 Gwahak-ro Yuseong-gu, Daejeon, 34142, Republic of Korea.

  • 키워드
    Anti-coincidence; Cosmic rays; Gamma-ray measurement; HPGe; Low background
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