Growth and characterization of Ce-doped Ca3(BO3) 2 crystals for neutron scintillator

Yutaka Fujimoto; Takayuki Yanagida; Hidehiko Tanaka; Yuui Yokota; Noriaki Kawaguti; Kentaro Fukuda; Daisuke Totsuka; Kenichi Watanabe; Atsushi Yamazaki; Akira Yoshikawa

doi:10.1016/j.jcrysgro.2010.10.189

Growth and characterization of Ce-doped Ca₃(BO₃) ₂ crystals for neutron scintillator

Yutaka Fujimoto, Takayuki Yanagida, Hidehiko Tanaka, Yuui Yokota, Noriaki Kawaguti, Kentaro Fukuda, Daisuke Totsuka, Kenichi Watanabe, Atsushi Yamazaki, Akira Yoshikawa

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

21 Citations (Scopus)

Abstract

Single crystals of undoped and Ce³-doped Ca₃(BO ₃)₂ (CBO) are grown by the Czochralski (CZ) method with an RF heating system. Undoped CBO crystal has high transmittance in the 190900 nm wavelength range, while the absorption bands were observed around 275 and 350 nm due to the transition from the 4f ground state levels of ²F _5/2 and ²F_7/2 to Ce³ 5d excited state in Ce³-doped one. The photoluminescence spectrum of Ce ³-doped CBO crystal showed strong emission band around 400 nm under both 275 and 350 nm excitation due to the 5d4f transition of Ce³. In the measurement of pulse height spectra under ²⁴¹Am 5.5 MeV α-ray excitation, Ce³-doped CBO showed higher energy resolution compared with that of crystal grown by the micro-pulling down (μ-PD) method.

Original language	English
Pages (from-to)	784-787
Number of pages	4
Journal	Journal of Crystal Growth
Volume	318
Issue number	1
DOIs	https://doi.org/10.1016/j.jcrysgro.2010.10.189
Publication status	Published - 2011 Mar 1

Keywords

A2. Czochralski method
B1. Borates
B2. Scintillator materials
B3. Scintillators

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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10.1016/j.jcrysgro.2010.10.189

Cite this

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title = "Growth and characterization of Ce-doped Ca3(BO3) 2 crystals for neutron scintillator",

abstract = "Single crystals of undoped and Ce3-doped Ca3(BO 3)2 (CBO) are grown by the Czochralski (CZ) method with an RF heating system. Undoped CBO crystal has high transmittance in the 190900 nm wavelength range, while the absorption bands were observed around 275 and 350 nm due to the transition from the 4f ground state levels of 2F 5/2 and 2F7/2 to Ce3 5d excited state in Ce3-doped one. The photoluminescence spectrum of Ce 3-doped CBO crystal showed strong emission band around 400 nm under both 275 and 350 nm excitation due to the 5d4f transition of Ce3. In the measurement of pulse height spectra under 241Am 5.5 MeV α-ray excitation, Ce3-doped CBO showed higher energy resolution compared with that of crystal grown by the micro-pulling down (μ-PD) method.",

keywords = "A2. Czochralski method, B1. Borates, B2. Scintillator materials, B3. Scintillators",

author = "Yutaka Fujimoto and Takayuki Yanagida and Hidehiko Tanaka and Yuui Yokota and Noriaki Kawaguti and Kentaro Fukuda and Daisuke Totsuka and Kenichi Watanabe and Atsushi Yamazaki and Akira Yoshikawa",

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T1 - Growth and characterization of Ce-doped Ca3(BO3) 2 crystals for neutron scintillator

AU - Fujimoto, Yutaka

AU - Yanagida, Takayuki

AU - Tanaka, Hidehiko

AU - Yokota, Yuui

AU - Kawaguti, Noriaki

AU - Fukuda, Kentaro

AU - Totsuka, Daisuke

AU - Watanabe, Kenichi

AU - Yamazaki, Atsushi

AU - Yoshikawa, Akira

PY - 2011/3/1

Y1 - 2011/3/1

N2 - Single crystals of undoped and Ce3-doped Ca3(BO 3)2 (CBO) are grown by the Czochralski (CZ) method with an RF heating system. Undoped CBO crystal has high transmittance in the 190900 nm wavelength range, while the absorption bands were observed around 275 and 350 nm due to the transition from the 4f ground state levels of 2F 5/2 and 2F7/2 to Ce3 5d excited state in Ce3-doped one. The photoluminescence spectrum of Ce 3-doped CBO crystal showed strong emission band around 400 nm under both 275 and 350 nm excitation due to the 5d4f transition of Ce3. In the measurement of pulse height spectra under 241Am 5.5 MeV α-ray excitation, Ce3-doped CBO showed higher energy resolution compared with that of crystal grown by the micro-pulling down (μ-PD) method.

AB - Single crystals of undoped and Ce3-doped Ca3(BO 3)2 (CBO) are grown by the Czochralski (CZ) method with an RF heating system. Undoped CBO crystal has high transmittance in the 190900 nm wavelength range, while the absorption bands were observed around 275 and 350 nm due to the transition from the 4f ground state levels of 2F 5/2 and 2F7/2 to Ce3 5d excited state in Ce3-doped one. The photoluminescence spectrum of Ce 3-doped CBO crystal showed strong emission band around 400 nm under both 275 and 350 nm excitation due to the 5d4f transition of Ce3. In the measurement of pulse height spectra under 241Am 5.5 MeV α-ray excitation, Ce3-doped CBO showed higher energy resolution compared with that of crystal grown by the micro-pulling down (μ-PD) method.

KW - A2. Czochralski method

KW - B1. Borates

KW - B2. Scintillator materials

KW - B3. Scintillators

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