Temperature Dependence of Neutron-Gamma Discrimination Based on Pulse Shape Discrimination Technique in a ${\rm Ce:LiCaAlF}_{6}$ Scintillator

LiCaAlF₆ scintillators are one of the attractive scintillators for neutron detection. To reduce the effect on gamma-rays, the Ce doped LiCaAlF₆ scintillators can discriminate the neutron and gamma-ray events based on the pulse shape discrimination technique. To apply the scintillators for the oil logging, the high temperature characteristics must be investigated. In this paper, the temperature dependence of the neutron-gamma discrimination based on pulse shape discrimination technique in the Ce:LiCaAlF₆ scintillator is investigated as one of the high temperature characteristics. The property of pulse shape discrimination in the Ce:LiCaAlF₆ has small temperature dependence ranging from 25^°C to 150^°C. We concluded that the Ce:LiCaAlF₆ scintillators can discriminate neutron and gamma-ray events under high temperature condition up to 150^°C .