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  • [Radiation Measurements] Evaluation of spatial distribution of fast and thermal neutrons using array-type threshold detectors배열형 검출기를 이용한 고속 및 열 중성자의 공간 분포를 측정한다

    KAERI / 김지석*

  • 출처
    Radiation Measurements
  • 등재일
    March 2019
  • 저널이슈번호
    Volume 122, Pages 101-107
  • 내용

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    Abstract
    This study aimed to verify whether neutron energy and flux could be simultaneously measured by a new technique that used array-type threshold detectors. Neutrons generated by nuclear reactions between 26-MeV protons and beryllium targets in the KIRAMS MC50 cyclotronwere measured using array-type threshold detectors fabricated by superimposing four array-type activation foils composed of Au, Ag, In, and Cu. The measurement results were compared to the simulation results obtained using MCNPX and FISPACT codes. The study results showed that the spatial distribution of high-speed neutrons was mostly concentrated at the center of the beam whereas that of thermal neutronswas relatively sparse at the center of the beam.

     

    Jiseok Kim a b, Chewook Yim b, Han Rim Lee a, Jiseung Yoon c, Yong kyun Kim b

    a
    Korea Atomic Energy Research Institute (KAERI), 111, Daedeok-Daero, 989 Beon-Gil, Yuseong-gu, Daejeon, Republic of Korea
    b
    Department of Nuclear Engineering, Hanyang University, Seongdong-gu, Seoul, 04763, Republic of Korea
    c
    Korea Electronic Power Company Engineering & Construction, 269 Hyeoksin-ro, Gimcheon-si, Gyeongsangbuk-do, 39660, Republic of Korea

  • 키워드
    Activation foilThreshold detectorNeutron fluxNeutron energySpatial distribution
  • 편집위원

    에너지별로 중성자의 분포를 동시에 측정할 수 있는 방법을 제시했는데, 전산모사와 측정을 병행하여 중성자의 에너지에 따라 분포가 달라짐을 확인한 것이 흥미로왔다.

    2019-04-17 16:05:16

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