Gamma and neutron separation using emission wavelengths in Eu:LiCaI scintillators
| Autor: | Iida, Takashi, Yoshino, Masao, Kamada, Kei, Sasaki, Rei, Yajima, Ryuga |
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| Rok vydání: | 2022 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | Scintillators have long been known as radiation detectors and are still used in various applications. Recently, scintillators containing $^6$Li have been developed as neutron detectors and have attracted attention. $^6$Li absorbs thermal neutrons and emits $\alpha$+$^3$H, which is promising as a neutron detector if it can be separated from background gamma rays. We have been developing Eu:LiI-CaI$_2$-based scintillators (Eu:LiCaI) for this purpose. In scintillator detectors, waveform information is generally used to distinguish particles such as neutrons and gamma rays. We propose a new particle identification method using emission wavelengths information. In this study, experiments were conducted using Eu:LiCaI crystals, multi-pixel photon counter optical sensors, and long-wavelength cut filters to verify the proposed method. The results of irradiating a $^{252}$Cf neutron source and a $^{60}$Co gamma-ray source indicate that there is a particle dependence of the output signal ratio between with and without filters. This means that different types of radiation particles have different emission wavelengths. This is the first demonstration of a wavelength-based particle identification method. Comment: 13 pages, 10 figures |
| Databáze: | arXiv |
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