Crystal growth and scintillation properties of Lu substituted CeBr3 single crystals

Tomoki Ito; Yuui Yokota; Shunsuke Kurosawa; Robert Král; Kei Kamada; Jan Pejchal; Yuji Ohashi; Akira Yoshikawa

doi:10.1016/j.jcrysgro.2016.04.059

Crystal growth and scintillation properties of Lu substituted CeBr₃ single crystals

Tomoki Ito, Yuui Yokota, Shunsuke Kurosawa, Robert Král, Kei Kamada, Jan Pejchal, Yuji Ohashi, Akira Yoshikawa

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

2 Citations (Scopus)

Abstract

We grew Lu-substituted CeBr₃ [(Ce_1−xLu_x)Br₃] crystals by a modified micro-pulling-down method to increase the effective atomic number and to investigate effects of the Lu substitution on the crystal growth, phase generation, chemical composition, and optical and scintillation properties. The (Ce_1−xLu_x)Br₃ crystals with x=0 and 0.01 had high transparency while the milky parts were generated in the crystals with x=0.05 and 0.20. By the analysis of chemical composition, the estimated Z_eff increased to 47.9. On the other hand, the light yields were systematically decreased and decay times were increased with increasing Lu concentration.

Original language	English
Pages (from-to)	65-68
Number of pages	4
Journal	Journal of Crystal Growth
Volume	452
DOIs	https://doi.org/10.1016/j.jcrysgro.2016.04.059
Publication status	Published - 2016 Oct 15

Keywords

A1. Radiation
A2. Growth from melt
A2. Single crystal growth
B1. Halides
B2. Scintillator materials
B3. Scintillators

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

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title = "Crystal growth and scintillation properties of Lu substituted CeBr3 single crystals",

abstract = "We grew Lu-substituted CeBr3 [(Ce1−xLux)Br3] crystals by a modified micro-pulling-down method to increase the effective atomic number and to investigate effects of the Lu substitution on the crystal growth, phase generation, chemical composition, and optical and scintillation properties. The (Ce1−xLux)Br3 crystals with x=0 and 0.01 had high transparency while the milky parts were generated in the crystals with x=0.05 and 0.20. By the analysis of chemical composition, the estimated Zeff increased to 47.9. On the other hand, the light yields were systematically decreased and decay times were increased with increasing Lu concentration.",

keywords = "A1. Radiation, A2. Growth from melt, A2. Single crystal growth, B1. Halides, B2. Scintillator materials, B3. Scintillators",

author = "Tomoki Ito and Yuui Yokota and Shunsuke Kurosawa and Robert Kr{\'a}l and Kei Kamada and Jan Pejchal and Yuji Ohashi and Akira Yoshikawa",

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language = "English",

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journal = "Journal of Crystal Growth",

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T1 - Crystal growth and scintillation properties of Lu substituted CeBr3 single crystals

AU - Ito, Tomoki

AU - Yokota, Yuui

AU - Kurosawa, Shunsuke

AU - Král, Robert

AU - Kamada, Kei

AU - Pejchal, Jan

AU - Ohashi, Yuji

AU - Yoshikawa, Akira

PY - 2016/10/15

Y1 - 2016/10/15

N2 - We grew Lu-substituted CeBr3 [(Ce1−xLux)Br3] crystals by a modified micro-pulling-down method to increase the effective atomic number and to investigate effects of the Lu substitution on the crystal growth, phase generation, chemical composition, and optical and scintillation properties. The (Ce1−xLux)Br3 crystals with x=0 and 0.01 had high transparency while the milky parts were generated in the crystals with x=0.05 and 0.20. By the analysis of chemical composition, the estimated Zeff increased to 47.9. On the other hand, the light yields were systematically decreased and decay times were increased with increasing Lu concentration.

AB - We grew Lu-substituted CeBr3 [(Ce1−xLux)Br3] crystals by a modified micro-pulling-down method to increase the effective atomic number and to investigate effects of the Lu substitution on the crystal growth, phase generation, chemical composition, and optical and scintillation properties. The (Ce1−xLux)Br3 crystals with x=0 and 0.01 had high transparency while the milky parts were generated in the crystals with x=0.05 and 0.20. By the analysis of chemical composition, the estimated Zeff increased to 47.9. On the other hand, the light yields were systematically decreased and decay times were increased with increasing Lu concentration.

KW - A1. Radiation

KW - A2. Growth from melt

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KW - B1. Halides

KW - B2. Scintillator materials

KW - B3. Scintillators

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