Nuclear Techniques ›› 2015, Vol. 38 ›› Issue (5): 50403-050403.doi: 10.11889/j.0253-3219.2015.hjs.38.050403


Double pulse waveform spectrum of EJ339A capture-gated neutron detector

CHANG Le1,2 LIU Longxiang2,3 WANG Hongwei2,3 MA Chunwang1 CAO Xiguang2,3 ZHANG Guoqiang2,3 LIU Yingdu2,4   

  1. 1(Institute of Particle Physics and Nuclear Physics, Henan Normal University, Xinxiang 453007, China) 2(Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Jiading Campus, Shanghai 201800, China) 3(Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Chinese Academy of Sciences, Shanghai 201800, China) 4(University of Chinese Academy of Sciences, Beijing 100049, China)
  • Received:2015-02-05 Revised:2015-03-10 Online:2015-05-10 Published:2015-05-08
  • Contact: Chun-Wang Ma

Abstract: Background: Capture-gated neutron detector has been doped by the higher thermal cross section elements, such as 6Li, 10B or natGd, for a fast neutron incident detector signal with n-p recoil impulse and pulse neutron capture associated characteristics. Purpose: The aim is to study the double pulse waveform spectra and to analyze the n-p recoil impulse of the EJ339A capture-gated neutron detector. Methods: Through the analysis of energy spectra and the double pulse waveform spectra, the characteristics of EJ339A capture-gated detector are studied. Results: Capture-gated detector from the energy spectra and PSD spectra measurement is effective for neutron and gamma ray. The wave of digital technology could well analyze the n-p recoil impulse and give the τ value of the EJ339A in the experiment. Conclusion: EJ339A really has captured-gated detector characteristics, pulse neutron capture and n-p associated characteristics of recoil impulse. The capture time of EJ339A is 0.44 μs, which is consistent with the theoretical calculation results.

Key words: Capture-gated, Scintillator detector, EJ339A, Neutrons