Comparative studies of optical and scintillation properties between LiGaO2 and LiAlO2 crystals

Takayuki Yanagida; Yutaka Fujimoto; Masanori Koshimizu; Naoki Kawano; Go Okada; Noriaki Kawaguchi

doi:10.7566/JPSJ.86.094201

Comparative studies of optical and scintillation properties between LiGaO₂ and LiAlO₂ crystals

Takayuki Yanagida, Yutaka Fujimoto, Masanori Koshimizu, Naoki Kawano, Go Okada, Noriaki Kawaguchi

ENG - Applied Chemistry

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

We have investigated optical and scintillation properties of LiGaO₂ and LiAlO₂ crystals. From the transmittance spectra, the absorption edges were found to be around 200 nm but wider band gap was confirmed for LiAlO₂ than LiGaO₂. Both photoluminescence and scintillation spectra showed a broad emission band peaking at 340 nm in the both crystals. The scintillation decay times of LiGaO₂ were 460 ns and 2.8 µs while that of LiAlO₂ was 2 µs. Under neutron irradiation from ²⁵²Cf, the absolute scintillation light yields of LiGaO₂ and LiAlO₂ were 3300 ± 300 and 7200 ± 700 ph/n, respectively.

Original language	English
Article number	094201
Journal	journal of the physical society of japan
Volume	86
Issue number	9
DOIs	https://doi.org/10.7566/JPSJ.86.094201
Publication status	Published - 2017 Sep 15

ASJC Scopus subject areas

Physics and Astronomy(all)

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title = "Comparative studies of optical and scintillation properties between LiGaO2 and LiAlO2 crystals",

abstract = "We have investigated optical and scintillation properties of LiGaO2 and LiAlO2 crystals. From the transmittance spectra, the absorption edges were found to be around 200 nm but wider band gap was confirmed for LiAlO2 than LiGaO2. Both photoluminescence and scintillation spectra showed a broad emission band peaking at 340 nm in the both crystals. The scintillation decay times of LiGaO2 were 460 ns and 2.8 µs while that of LiAlO2 was 2 µs. Under neutron irradiation from 252Cf, the absolute scintillation light yields of LiGaO2 and LiAlO2 were 3300 ± 300 and 7200 ± 700 ph/n, respectively.",

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T1 - Comparative studies of optical and scintillation properties between LiGaO2 and LiAlO2 crystals

AU - Yanagida, Takayuki

AU - Fujimoto, Yutaka

AU - Koshimizu, Masanori

AU - Kawano, Naoki

AU - Okada, Go

AU - Kawaguchi, Noriaki

PY - 2017/9/15

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N2 - We have investigated optical and scintillation properties of LiGaO2 and LiAlO2 crystals. From the transmittance spectra, the absorption edges were found to be around 200 nm but wider band gap was confirmed for LiAlO2 than LiGaO2. Both photoluminescence and scintillation spectra showed a broad emission band peaking at 340 nm in the both crystals. The scintillation decay times of LiGaO2 were 460 ns and 2.8 µs while that of LiAlO2 was 2 µs. Under neutron irradiation from 252Cf, the absolute scintillation light yields of LiGaO2 and LiAlO2 were 3300 ± 300 and 7200 ± 700 ph/n, respectively.

AB - We have investigated optical and scintillation properties of LiGaO2 and LiAlO2 crystals. From the transmittance spectra, the absorption edges were found to be around 200 nm but wider band gap was confirmed for LiAlO2 than LiGaO2. Both photoluminescence and scintillation spectra showed a broad emission band peaking at 340 nm in the both crystals. The scintillation decay times of LiGaO2 were 460 ns and 2.8 µs while that of LiAlO2 was 2 µs. Under neutron irradiation from 252Cf, the absolute scintillation light yields of LiGaO2 and LiAlO2 were 3300 ± 300 and 7200 ± 700 ph/n, respectively.

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