Pulse-Shape Discrimination of CaF2(Eu)
S. Oguri, Y. Inoue, M. Minowa
TL;DR
This study introduces a new method to measure scintillation pulse decay times in CaF2(Eu), revealing differences between electron and nuclear recoils that could enhance particle discrimination in detectors.
Contribution
A novel fitting technique for decay time measurement in CaF2(Eu) scintillators, demonstrating recoil-type dependence and energy independence at higher energies.
Findings
Decay time differs between electron and nuclear recoils in 5-30 keVee range.
Decay time is independent of recoil energy above 20 keVee.
New fitting method improves pulse-shape discrimination analysis.
Abstract
We measured the decay time of the scintillation pulses produced by electron and nuclear recoils in CaF2(Eu) by a new fitting method. In the recoil energy region 5-30 keVee, we found differences of the decay time between electron and nuclear recoil events. In the recoil energy region above 20 keVee, we found that the decay time is independent of the recoil energy.
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