Development of Neutron Induced Prompt γ-ray Spectroscopy System Using 252Cf

252Cf 선원을 이용한 즉발감마선 계측시스템 구성

  • Park, Yong-Joon (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Song, Byung-Chul (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute) ;
  • Jee, Kwang-Yong (Nuclear Chemistry Research Team, Korea Atomic Energy Research Institute)
  • 박용준 (한국원자력연구소 원자력화학연구팀) ;
  • 송병철 (한국원자력연구소 원자력화학연구팀) ;
  • 지광용 (한국원자력연구소 원자력화학연구팀)
  • Received : 2002.10.16
  • Accepted : 2003.01.14
  • Published : 2003.02.25

Abstract

For the design and set-up of neutron induced prompt ${\gamma}$-ray spectroscopy system using $^{252}Cf$ neutron source, the effects of shielding and moderator materials have been examined. The $^{252}Cf$ source being used for TLD badge calibration in Korea Atomic Energy Research Institute was utilized for this preliminary experiment. The ${\gamma}$-ray background and prompt ${\gamma}$-ray spectrum of the sample containing Cl were measured using HPGe (GMX 60% relative efficiency) located at the inside of the system connected to notebook PC at the outside of the system (about 20 meter distance). The background activities of neutron and ${\gamma}$-rays were measured with neutron survey meter as well as ${\gamma}$-ray survey meters, respectively and the system was designed to minimize the activities. Prompt ${\gamma}$-ray spectrum was measured using ${\gamma}$-${\gamma}$ coincident system for reduce the background and the continuum spectrum. The optimum system was designed and set up using the experimental data obtained.

Keywords

prompt gamma;neutron;NIPS system;${\gamma}$-${\gamma}$ coincidence

Acknowledgement

Supported by : 과학기술부

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