Eu and Rb co-doped LiCaAlF6 scintillators for neutron detection

Akihiro Yamaji; Takayuki Yanagida; Noriaki Kawaguchi; Yuui Yokota; Yutaka Fujimoto; Shunsuke Kurosawa; Jan Pejchal; Kenichi Watanabe; Atsushi Yamazaki; Akira Yoshikawa

doi:10.1016/j.radmeas.2013.04.021

Eu and Rb co-doped LiCaAlF₆ scintillators for neutron detection

Akihiro Yamaji, Takayuki Yanagida, Noriaki Kawaguchi, Yuui Yokota, Yutaka Fujimoto, Shunsuke Kurosawa, Jan Pejchal, Kenichi Watanabe, Atsushi Yamazaki, Akira Yoshikawa

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

4 Citations (Scopus)

Abstract

Eu and Rb co-doped LiCaAlF₆ (LiCAF) single crystals with different dopant concentrations were grown by the micro-pulling-down method for neutron detection. Their transmittance spectra showed strong absorption bands at 200-220 and 290-350 nm, and under ²⁴¹Am alpha-ray excitation, their radioluminescence spectra exhibited an intense emission peak at 373 nm that was attributed to the Eu²⁺ 5d-4f transition. These results were consistent with those for the Rb-free Eu:LiCAF. The highest light yield among the grown crystals was 36,000 ph/n, which was 20% greater than that of the Rb-free crystal. In addition, the neutron-excited scintillation decay times were 650-750 ns slower than that of the Rb-free Eu:LiCAF.

Original language	English
Pages (from-to)	132-135
Number of pages	4
Journal	Radiation Measurements
Volume	55
DOIs	https://doi.org/10.1016/j.radmeas.2013.04.021
Publication status	Published - 2013 Aug

Keywords

Co-doping
LiCaAlF
Scintillator
Single crystal
Thermal neutron

ASJC Scopus subject areas

Radiation
Instrumentation

Access to Document

10.1016/j.radmeas.2013.04.021

Cite this

@article{7f39b3111cd7406bb293258cb923e585,

title = "Eu and Rb co-doped LiCaAlF6 scintillators for neutron detection",

abstract = "Eu and Rb co-doped LiCaAlF6 (LiCAF) single crystals with different dopant concentrations were grown by the micro-pulling-down method for neutron detection. Their transmittance spectra showed strong absorption bands at 200-220 and 290-350 nm, and under 241Am alpha-ray excitation, their radioluminescence spectra exhibited an intense emission peak at 373 nm that was attributed to the Eu2+ 5d-4f transition. These results were consistent with those for the Rb-free Eu:LiCAF. The highest light yield among the grown crystals was 36,000 ph/n, which was 20% greater than that of the Rb-free crystal. In addition, the neutron-excited scintillation decay times were 650-750 ns slower than that of the Rb-free Eu:LiCAF.",

keywords = "Co-doping, LiCaAlF, Scintillator, Single crystal, Thermal neutron",

author = "Akihiro Yamaji and Takayuki Yanagida and Noriaki Kawaguchi and Yuui Yokota and Yutaka Fujimoto and Shunsuke Kurosawa and Jan Pejchal and Kenichi Watanabe and Atsushi Yamazaki and Akira Yoshikawa",

note = "Funding Information: This work was partially supported by the funding program of Adaptable and Seamless Technology transfer Program through target drive R&D, Japan Science and Technology Agency. Copyright: Copyright 2013 Elsevier B.V., All rights reserved.",

year = "2013",

month = aug,

doi = "10.1016/j.radmeas.2013.04.021",

language = "English",

volume = "55",

pages = "132--135",

journal = "Radiation Measurements",

issn = "1350-4487",

publisher = "Elsevier Limited",

}

TY - JOUR

T1 - Eu and Rb co-doped LiCaAlF6 scintillators for neutron detection

AU - Yamaji, Akihiro

AU - Yanagida, Takayuki

AU - Kawaguchi, Noriaki

AU - Yokota, Yuui

AU - Fujimoto, Yutaka

AU - Kurosawa, Shunsuke

AU - Pejchal, Jan

AU - Watanabe, Kenichi

AU - Yamazaki, Atsushi

AU - Yoshikawa, Akira

N1 - Funding Information: This work was partially supported by the funding program of Adaptable and Seamless Technology transfer Program through target drive R&D, Japan Science and Technology Agency. Copyright: Copyright 2013 Elsevier B.V., All rights reserved.

PY - 2013/8

Y1 - 2013/8

N2 - Eu and Rb co-doped LiCaAlF6 (LiCAF) single crystals with different dopant concentrations were grown by the micro-pulling-down method for neutron detection. Their transmittance spectra showed strong absorption bands at 200-220 and 290-350 nm, and under 241Am alpha-ray excitation, their radioluminescence spectra exhibited an intense emission peak at 373 nm that was attributed to the Eu2+ 5d-4f transition. These results were consistent with those for the Rb-free Eu:LiCAF. The highest light yield among the grown crystals was 36,000 ph/n, which was 20% greater than that of the Rb-free crystal. In addition, the neutron-excited scintillation decay times were 650-750 ns slower than that of the Rb-free Eu:LiCAF.

AB - Eu and Rb co-doped LiCaAlF6 (LiCAF) single crystals with different dopant concentrations were grown by the micro-pulling-down method for neutron detection. Their transmittance spectra showed strong absorption bands at 200-220 and 290-350 nm, and under 241Am alpha-ray excitation, their radioluminescence spectra exhibited an intense emission peak at 373 nm that was attributed to the Eu2+ 5d-4f transition. These results were consistent with those for the Rb-free Eu:LiCAF. The highest light yield among the grown crystals was 36,000 ph/n, which was 20% greater than that of the Rb-free crystal. In addition, the neutron-excited scintillation decay times were 650-750 ns slower than that of the Rb-free Eu:LiCAF.

KW - Co-doping

KW - LiCaAlF

KW - Scintillator

KW - Single crystal

KW - Thermal neutron

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