Study on Thermal Neutron Efficiency for Neutron Induced Prompt Gamma-ray Spectrometer Using Various Reflectors

즉발감마선 계측시스템의 반사체를 이용한 열중성자 효율증대 연구

  • Park, Y.J. (Korea Atomic Energy Research Institute) ;
  • Song, B.C. (Korea Atomic Energy Research Institute) ;
  • Jee, K.Y. (Korea Atomic Energy Research Institute)
  • 박용준 (한국원자력연구소 원자력화학연구부) ;
  • 송병철 (한국원자력연구소 원자력화학연구부) ;
  • 지광용 (한국원자력연구소 원자력화학연구부)
  • Received : 2003.08.26
  • Accepted : 2003.09.19
  • Published : 2003.10.25

Abstract

Neutron induced prompt gamma-ray spectroscopy (NIPS) system equipped with a $^{252}Cf$ neutron source and a n-type coaxial HPGe detector was installed for the quantitative analysis of aqueous samples in KAERI, Korea. Since the thermal neutron flux for the $^{252}Cf$ neutron source is relatively low compared to that for the reactor, the use of a thermal neutron reflector in the NIPS system may lead to improved results. The enhancement by using various reflectors was carried out by comparing the Cl peak with or without a cadmium plate between sample and the $^{252}Cf$ source. The use of pyrolitic graphite as a reflector provided a good result.

Keywords

thermal neutron;reflector;HPGe detector

Acknowledgement

Supported by : 과학기술부

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