Nuclear Engineering and Technology

  • 제46권2호
  • /
  • Pages.273-280
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  • 2014
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  • 1738-5733(pISSN)
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  • 2234-358X(eISSN)
한국원자력학회 (Korean Nuclear Society)
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SPECTRUM WEIGHTED RESPONSES OF SEVERAL DETECTORS IN MIXED FIELDS OF FAST AND THERMAL NEUTRONS

  • Kim, Sang In (Health Physics Team, Korea Atomic Energy Research Institute) ;
  • Chang, Insu (Health Physics Team, Korea Atomic Energy Research Institute) ;
  • Kim, Bong Hwan (Health Physics Team, Korea Atomic Energy Research Institute) ;
  • Kim, Jang Lyul (Health Physics Team, Korea Atomic Energy Research Institute) ;
  • Lee, Jung Il (Health Physics Team, Korea Atomic Energy Research Institute)
  • 투고 : 2013.04.01
  • 심사 : 2013.09.25
  • 발행 : 2014.04.25
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초록

The spectrum weighted responses of various detectors were calculated to provide guidance on the proper selection and use of survey instruments on the basis of their energy response characteristics on the neutron fields. To yield the spectrum weighted response, the detector response functions of 17 neutron-measuring devices were numerically folded with each of the produced calibration neutron spectra through the in-house developed software 'K-SWR'. The detectors' response functions were taken from the IAEA Technical Reports Series No. 403 (TRS-403). The reference neutron fields of 21 kinds with 2 spectra groups with different proportions of thermal and fast neutrons have been produced using neutrons from the $^{241}Am$-Be sources held in a graphite pile, a bare $^{241}Am$-Be source, and a DT neutron generator. Fluence-average energy ($E_{ave}$) varied from 3.8 MeV to 16.9 MeV, and the ambient-dose-equivalent rate [$H^*(10)/h$] varied from 0.99 to 16.5 mSv/h.

키워드

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