Growth of Eu:SrI2bulk crystals and their scintillation properties

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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 languageEnglish
Pages (from-to)343-346
Number of pages4
JournalJournal of Crystal Growth
Volume401
DOIs
Publication statusPublished - 2014 Sep 1

Keywords

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

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Materials Chemistry
  • Inorganic Chemistry

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