Growth of Eu:SrI2bulk crystals and their scintillation properties

Yuui Yokota; Shunsuke Kurosawa; Kei Nishimoto; Kei Kamada; Akira Yoshikawa

doi:10.1016/j.jcrysgro.2014.02.031

Growth of Eu:SrI₂bulk crystals and their scintillation properties

Yuui Yokota, Shunsuke Kurosawa, Kei Nishimoto, Kei Kamada, Akira Yoshikawa

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

21 Citations (Scopus)

Abstract

Eu doped SrI₂[Eu:SrI₂] bulk single crystals with 1 in. diameter were grown using a special-shaped carbon crucible and a modified micro-pulling-down furnace and their scintillation properties were investigated. As-grown Eu:SrI₂bulk crystals indicated high transparency while they included several cracks in the crystals. Grown crystals indicated a single phase of SrI₂structure in the powder X-ray diffraction measurement. In the X-ray radioluminescence spectrum, there was a sharp emission peak around 435 nm which originated from 5d-4f transition of Eu²⁺ion. Light yields of Eu5% and 7.5%:SrI₂crystals under γ-ray irradiation from ¹³⁷Cs radiation source were 83,000 and 85,000 ph/MeV, respectively. Their decay times under γ-ray irradiation were approximately 2 μs.

Original language	English
Pages (from-to)	343-346
Number of pages	4
Journal	Journal of Crystal Growth
Volume	401
DOIs	https://doi.org/10.1016/j.jcrysgro.2014.02.031
Publication status	Published - 2014 Sept 1

Keywords

A2. Growth from melt
B1. Halides
B2. Scintillator materials
B3. Scintillators

ASJC Scopus subject areas

Condensed Matter Physics
Inorganic Chemistry
Materials Chemistry

Access to Document

10.1016/j.jcrysgro.2014.02.031

Cite this

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title = "Growth of Eu:SrI2bulk crystals and their scintillation properties",

abstract = "Eu doped SrI2[Eu:SrI2] bulk single crystals with 1 in. diameter were grown using a special-shaped carbon crucible and a modified micro-pulling-down furnace and their scintillation properties were investigated. As-grown Eu:SrI2bulk crystals indicated high transparency while they included several cracks in the crystals. Grown crystals indicated a single phase of SrI2structure in the powder X-ray diffraction measurement. In the X-ray radioluminescence spectrum, there was a sharp emission peak around 435 nm which originated from 5d-4f transition of Eu2+ion. Light yields of Eu5% and 7.5%:SrI2crystals under γ-ray irradiation from 137Cs radiation source were 83,000 and 85,000 ph/MeV, respectively. Their decay times under γ-ray irradiation were approximately 2 μs.",

keywords = "A2. Growth from melt, B1. Halides, B2. Scintillator materials, B3. Scintillators",

author = "Yuui Yokota and Shunsuke Kurosawa and Kei Nishimoto and Kei Kamada and Akira Yoshikawa",

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doi = "10.1016/j.jcrysgro.2014.02.031",

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T1 - Growth of Eu:SrI2bulk crystals and their scintillation properties

AU - Yokota, Yuui

AU - Kurosawa, Shunsuke

AU - Nishimoto, Kei

AU - Kamada, Kei

AU - Yoshikawa, Akira

PY - 2014/9/1

Y1 - 2014/9/1

N2 - Eu doped SrI2[Eu:SrI2] bulk single crystals with 1 in. diameter were grown using a special-shaped carbon crucible and a modified micro-pulling-down furnace and their scintillation properties were investigated. As-grown Eu:SrI2bulk crystals indicated high transparency while they included several cracks in the crystals. Grown crystals indicated a single phase of SrI2structure in the powder X-ray diffraction measurement. In the X-ray radioluminescence spectrum, there was a sharp emission peak around 435 nm which originated from 5d-4f transition of Eu2+ion. Light yields of Eu5% and 7.5%:SrI2crystals under γ-ray irradiation from 137Cs radiation source were 83,000 and 85,000 ph/MeV, respectively. Their decay times under γ-ray irradiation were approximately 2 μs.

AB - Eu doped SrI2[Eu:SrI2] bulk single crystals with 1 in. diameter were grown using a special-shaped carbon crucible and a modified micro-pulling-down furnace and their scintillation properties were investigated. As-grown Eu:SrI2bulk crystals indicated high transparency while they included several cracks in the crystals. Grown crystals indicated a single phase of SrI2structure in the powder X-ray diffraction measurement. In the X-ray radioluminescence spectrum, there was a sharp emission peak around 435 nm which originated from 5d-4f transition of Eu2+ion. Light yields of Eu5% and 7.5%:SrI2crystals under γ-ray irradiation from 137Cs radiation source were 83,000 and 85,000 ph/MeV, respectively. Their decay times under γ-ray irradiation were approximately 2 μs.

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