Neutrongamma discrimination based on pulse shape discrimination in a Ce:LiCaAlF6 scintillator

Atsushi Yamazaki, Kenichi Watanabe, Akira Uritani, Tetsuo Iguchi, Noriaki Kawaguchi, Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Kentaro Fukuda, Toshihisa Suyama, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

46 Citations (Scopus)

Abstract

We demonstrate neutrongamma discrimination based on a pulse shape discrimination method in a Ce:LiCAF scintillator. We have tried neutrongamma discrimination using a difference in the pulse shape or the decay time of the scintillation light pulse. The decay time is converted into the rise time through an integrating circuit. A 252Cf enclosed in a polyethylene container is used as the source of thermal neutrons and prompt gamma-rays. Obvious separation of neutron and gamma-ray events is achieved using the information of the rise time of the scintillation light pulse. In the separated neutron spectrum, the gamma-ray events are effectively suppressed with little loss of neutron events. The pulse shape discrimination is confirmed to be useful to detect neutrons with the Ce:LiCAF scintillator under an intense high-energy gamma-ray condition.

Original languageEnglish
Pages (from-to)435-438
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume652
Issue number1
DOIs
Publication statusPublished - 2011 Oct 1

Keywords

  • Neutron detection
  • Neutron scintillator
  • Neutron/gamma discrimination
  • Pulse shape discrimination

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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