Basic study of Europium doped LiCaAlF6 scintillator and its capability for thermal neutron imaging application

Takayuki Yanagida; Noriaki Kawaguchi; Yutaka Fujimoto; Kentaro Fukuda; Yuui Yokota; Atsushi Yamazaki; Kenichi Watanabe; Jan Pejchal; Akira Uritani; Tetsuo Iguchi; Akira Yoshikawa

doi:10.1016/j.optmat.2011.02.016

Basic study of Europium doped LiCaAlF₆ scintillator and its capability for thermal neutron imaging application

Takayuki Yanagida, Noriaki Kawaguchi, Yutaka Fujimoto, Kentaro Fukuda, Yuui Yokota, Atsushi Yamazaki, Kenichi Watanabe, Jan Pejchal, Akira Uritani, Tetsuo Iguchi, Akira Yoshikawa

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

93 Citations (Scopus)

Abstract

Eu²⁺ 0.1, 0.5, 1, and 2 mol% doped LiCaAlF₆ single crystalline scintillators were grown by the micro-pulling down (μ-PD) method. Eu²⁺ 2 mol% doped LiCaAlF₆ was also prepared using the Czochralski method. In the transmittance spectra, 4f-5d absorption lines appeared around 200-220 and 290-350 nm. An intense emission at 375 nm due to Eu²⁺ 5d-4f transition was observed under ²⁴¹Am α-ray excitation. When ²⁵²Cf excited pulse height spectra were measured, Eu 2% doped one showed the highest light yield of 29,000 ph/n with 1.15 μs decay time. Using the 2 inch Czochralski grown one coupled with the position sensitive photomultiplier tube covered by Cd mask with various size (1, 2, 3, and 5 mm) pin holes, thermal neutron imaging was examined. As a result, the spatial resolution turned out to be better than 1 mm.

Original language	English
Pages (from-to)	1243-1247
Number of pages	5
Journal	Optical Materials
Volume	33
Issue number	8
DOIs	https://doi.org/10.1016/j.optmat.2011.02.016
Publication status	Published - 2011 Jun

Keywords

Neutron
Scintillation detector
Scintillator
Single crystal

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Computer Science(all)
Atomic and Molecular Physics, and Optics
Spectroscopy
Physical and Theoretical Chemistry
Organic Chemistry
Inorganic Chemistry
Electrical and Electronic Engineering

Access to Document

10.1016/j.optmat.2011.02.016

Cite this

Basic study of Europium doped LiCaAlF₆ scintillator and its capability for thermal neutron imaging application. / Yanagida, Takayuki; Kawaguchi, Noriaki; Fujimoto, Yutaka; Fukuda, Kentaro; Yokota, Yuui; Yamazaki, Atsushi; Watanabe, Kenichi; Pejchal, Jan; Uritani, Akira; Iguchi, Tetsuo; Yoshikawa, Akira.

In: Optical Materials, Vol. 33, No. 8, 06.2011, p. 1243-1247.

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

Yanagida, Takayuki ; Kawaguchi, Noriaki ; Fujimoto, Yutaka ; Fukuda, Kentaro ; Yokota, Yuui ; Yamazaki, Atsushi ; Watanabe, Kenichi ; Pejchal, Jan ; Uritani, Akira ; Iguchi, Tetsuo ; Yoshikawa, Akira. / Basic study of Europium doped LiCaAlF₆ scintillator and its capability for thermal neutron imaging application. In: Optical Materials. 2011 ; Vol. 33, No. 8. pp. 1243-1247.

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title = "Basic study of Europium doped LiCaAlF6 scintillator and its capability for thermal neutron imaging application",

abstract = "Eu2+ 0.1, 0.5, 1, and 2 mol% doped LiCaAlF6 single crystalline scintillators were grown by the micro-pulling down (μ-PD) method. Eu2+ 2 mol% doped LiCaAlF6 was also prepared using the Czochralski method. In the transmittance spectra, 4f-5d absorption lines appeared around 200-220 and 290-350 nm. An intense emission at 375 nm due to Eu2+ 5d-4f transition was observed under 241Am α-ray excitation. When 252Cf excited pulse height spectra were measured, Eu 2% doped one showed the highest light yield of 29,000 ph/n with 1.15 μs decay time. Using the 2 inch Czochralski grown one coupled with the position sensitive photomultiplier tube covered by Cd mask with various size (1, 2, 3, and 5 mm) pin holes, thermal neutron imaging was examined. As a result, the spatial resolution turned out to be better than 1 mm.",

keywords = "Neutron, Scintillation detector, Scintillator, Single crystal",

author = "Takayuki Yanagida and Noriaki Kawaguchi and Yutaka Fujimoto and Kentaro Fukuda and Yuui Yokota and Atsushi Yamazaki and Kenichi Watanabe and Jan Pejchal and Akira Uritani and Tetsuo Iguchi and Akira Yoshikawa",

note = "Funding Information: This work was mainly supported by JST Sentan and partially supported by a Grant-in-Aid for Young Scientists (B)-15686001, and (A)-19686001 from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT). This work is also supported by Ministry of Ministry of Health and Welfare, Grant-in-Aid for the development of medical instruments. Partial support of the Yazaki Memorial Foundation for Science and Technology, Japan Science Society, Sumitomo Foundation, and Iketani Science and Technology Foundation, are also gratefully acknowledged. The part of this work was performed under the Common-Use Facility Program of Japan Atomic Energy Agency (JAEA).",

year = "2011",

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doi = "10.1016/j.optmat.2011.02.016",

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T1 - Basic study of Europium doped LiCaAlF6 scintillator and its capability for thermal neutron imaging application

AU - Yanagida, Takayuki

AU - Kawaguchi, Noriaki

AU - Fujimoto, Yutaka

AU - Fukuda, Kentaro

AU - Yokota, Yuui

AU - Yamazaki, Atsushi

AU - Watanabe, Kenichi

AU - Pejchal, Jan

AU - Uritani, Akira

AU - Iguchi, Tetsuo

AU - Yoshikawa, Akira

N1 - Funding Information: This work was mainly supported by JST Sentan and partially supported by a Grant-in-Aid for Young Scientists (B)-15686001, and (A)-19686001 from the Ministry of Education, Culture, Sports, Science and Technology of the Japanese government (MEXT). This work is also supported by Ministry of Ministry of Health and Welfare, Grant-in-Aid for the development of medical instruments. Partial support of the Yazaki Memorial Foundation for Science and Technology, Japan Science Society, Sumitomo Foundation, and Iketani Science and Technology Foundation, are also gratefully acknowledged. The part of this work was performed under the Common-Use Facility Program of Japan Atomic Energy Agency (JAEA).

PY - 2011/6

Y1 - 2011/6

N2 - Eu2+ 0.1, 0.5, 1, and 2 mol% doped LiCaAlF6 single crystalline scintillators were grown by the micro-pulling down (μ-PD) method. Eu2+ 2 mol% doped LiCaAlF6 was also prepared using the Czochralski method. In the transmittance spectra, 4f-5d absorption lines appeared around 200-220 and 290-350 nm. An intense emission at 375 nm due to Eu2+ 5d-4f transition was observed under 241Am α-ray excitation. When 252Cf excited pulse height spectra were measured, Eu 2% doped one showed the highest light yield of 29,000 ph/n with 1.15 μs decay time. Using the 2 inch Czochralski grown one coupled with the position sensitive photomultiplier tube covered by Cd mask with various size (1, 2, 3, and 5 mm) pin holes, thermal neutron imaging was examined. As a result, the spatial resolution turned out to be better than 1 mm.

AB - Eu2+ 0.1, 0.5, 1, and 2 mol% doped LiCaAlF6 single crystalline scintillators were grown by the micro-pulling down (μ-PD) method. Eu2+ 2 mol% doped LiCaAlF6 was also prepared using the Czochralski method. In the transmittance spectra, 4f-5d absorption lines appeared around 200-220 and 290-350 nm. An intense emission at 375 nm due to Eu2+ 5d-4f transition was observed under 241Am α-ray excitation. When 252Cf excited pulse height spectra were measured, Eu 2% doped one showed the highest light yield of 29,000 ph/n with 1.15 μs decay time. Using the 2 inch Czochralski grown one coupled with the position sensitive photomultiplier tube covered by Cd mask with various size (1, 2, 3, and 5 mm) pin holes, thermal neutron imaging was examined. As a result, the spatial resolution turned out to be better than 1 mm.

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KW - Single crystal

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