Crystal growth and scintillation properties of Ce3+ and Mg 2+ co-doped LiCaAlF6 single crystal

Akihiro Yamaji; Yutaka Fujimoto; Takayuki Yanagida; Noriaki Kawaguchi; Yoshisuke Futami; Yuui Yokota; Akira Yoshikawa

doi:10.4028/www.scientific.net/KEM.508.240

Crystal growth and scintillation properties of Ce³⁺ and Mg ²⁺ co-doped LiCaAlF₆ single crystal

Akihiro Yamaji, Yutaka Fujimoto, Takayuki Yanagida, Noriaki Kawaguchi, Yoshisuke Futami, Yuui Yokota, Akira Yoshikawa

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Ce and Mg co-doped LiCaAlF₆ (LiCAF) single crystals were grown by micro-pulling-down (μ-PD) method and the optical and scintillation properties of obtained crystals were measured. The grown crystals were crack-free and had 30-50 mm in length and 2 mm in diameter. Absorption coefficients were proportional to the Ce nominal concentrations. The radioluminescence spectra under 5.5 MeV alpha-ray irradiation showed emission peak at 290 and 310 nm due to Ce³⁺ 5d-4f transitions, and were agreement with those of Ce single-doped LiCAF. The highest light yield under 5.5 MeV alpha-ray irradiation of Ce 4% and Mg 2% co-doped LiCAF was found to be 0.6 times than that of lithium glass scintillator GS-20. Comparing the light yield of LiCAF samples with the fixed Ce nominal concentration and different Mg co-doped concentrations, the light yield increased with an increase of Mg nominal concentration. The alpha-ray excited decay times were constantly 45-50 ns.

Original language	English
Title of host publication	Materials Integration
Publisher	Trans Tech Publications Ltd
Pages	240-246
Number of pages	7
ISBN (Print)	9783037853764
DOIs	https://doi.org/10.4028/www.scientific.net/KEM.508.240
Publication status	Published - 2012
Event	Int. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011 - Sendai, Japan Duration: 2011 Dec 1 → 2011 Dec 2

Publication series

Name	Key Engineering Materials
Volume	508
ISSN (Print)	1013-9826
ISSN (Electronic)	1662-9795

Other

Other	Int. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011
Country/Territory	Japan
City	Sendai
Period	11/12/1 → 11/12/2

Keywords

Co-doping
Micro-pulling-down method
Neutron scintillator
Single crystal

ASJC Scopus subject areas

Materials Science(all)
Mechanics of Materials
Mechanical Engineering

Access to Document

10.4028/www.scientific.net/KEM.508.240

Cite this

Yamaji, A , Fujimoto, Y, Yanagida, T, Kawaguchi, N, Futami, Y, Yokota, Y & Yoshikawa, A 2012, Crystal growth and scintillation properties of Ce³⁺ and Mg ²⁺ co-doped LiCaAlF₆ single crystal. in Materials Integration. Key Engineering Materials, vol. 508, Trans Tech Publications Ltd, pp. 240-246, Int. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011, Sendai, Japan, 11/12/1. https://doi.org/10.4028/www.scientific.net/KEM.508.240

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title = "Crystal growth and scintillation properties of Ce3+ and Mg 2+ co-doped LiCaAlF6 single crystal",

abstract = "Ce and Mg co-doped LiCaAlF6 (LiCAF) single crystals were grown by micro-pulling-down (μ-PD) method and the optical and scintillation properties of obtained crystals were measured. The grown crystals were crack-free and had 30-50 mm in length and 2 mm in diameter. Absorption coefficients were proportional to the Ce nominal concentrations. The radioluminescence spectra under 5.5 MeV alpha-ray irradiation showed emission peak at 290 and 310 nm due to Ce3+ 5d-4f transitions, and were agreement with those of Ce single-doped LiCAF. The highest light yield under 5.5 MeV alpha-ray irradiation of Ce 4% and Mg 2% co-doped LiCAF was found to be 0.6 times than that of lithium glass scintillator GS-20. Comparing the light yield of LiCAF samples with the fixed Ce nominal concentration and different Mg co-doped concentrations, the light yield increased with an increase of Mg nominal concentration. The alpha-ray excited decay times were constantly 45-50 ns.",

keywords = "Co-doping, Micro-pulling-down method, Neutron scintillator, Single crystal",

author = "Akihiro Yamaji and Yutaka Fujimoto and Takayuki Yanagida and Noriaki Kawaguchi and Yoshisuke Futami and Yuui Yokota and Akira Yoshikawa",

note = "Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; Int. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011 ; Conference date: 01-12-2011 Through 02-12-2011",

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AU - Yamaji, Akihiro

AU - Fujimoto, Yutaka

AU - Yanagida, Takayuki

AU - Kawaguchi, Noriaki

AU - Futami, Yoshisuke

AU - Yokota, Yuui

AU - Yoshikawa, Akira

PY - 2012

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N2 - Ce and Mg co-doped LiCaAlF6 (LiCAF) single crystals were grown by micro-pulling-down (μ-PD) method and the optical and scintillation properties of obtained crystals were measured. The grown crystals were crack-free and had 30-50 mm in length and 2 mm in diameter. Absorption coefficients were proportional to the Ce nominal concentrations. The radioluminescence spectra under 5.5 MeV alpha-ray irradiation showed emission peak at 290 and 310 nm due to Ce3+ 5d-4f transitions, and were agreement with those of Ce single-doped LiCAF. The highest light yield under 5.5 MeV alpha-ray irradiation of Ce 4% and Mg 2% co-doped LiCAF was found to be 0.6 times than that of lithium glass scintillator GS-20. Comparing the light yield of LiCAF samples with the fixed Ce nominal concentration and different Mg co-doped concentrations, the light yield increased with an increase of Mg nominal concentration. The alpha-ray excited decay times were constantly 45-50 ns.

AB - Ce and Mg co-doped LiCaAlF6 (LiCAF) single crystals were grown by micro-pulling-down (μ-PD) method and the optical and scintillation properties of obtained crystals were measured. The grown crystals were crack-free and had 30-50 mm in length and 2 mm in diameter. Absorption coefficients were proportional to the Ce nominal concentrations. The radioluminescence spectra under 5.5 MeV alpha-ray irradiation showed emission peak at 290 and 310 nm due to Ce3+ 5d-4f transitions, and were agreement with those of Ce single-doped LiCAF. The highest light yield under 5.5 MeV alpha-ray irradiation of Ce 4% and Mg 2% co-doped LiCAF was found to be 0.6 times than that of lithium glass scintillator GS-20. Comparing the light yield of LiCAF samples with the fixed Ce nominal concentration and different Mg co-doped concentrations, the light yield increased with an increase of Mg nominal concentration. The alpha-ray excited decay times were constantly 45-50 ns.

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