Growth and scintillation properties of directionally solidified ce:Labr3/aebr2 (AE = mG, Ca, Sr, Ba) eutectic system

Kyoung Jin Kim, Yuki Furuya, Kei Kamada, Rikito Murakami, Vladimir V. Kochurikhin, Masao Yoshino, Hiroyuki Chiba, Shunsuke Kurosawa, Akihiro Yamaji, Yasuhiro Shoji, Satoshi Toyoda, Hiroki Sato, Yuui Yokota, Yuji Ohashi, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

Abstract

Ce-doped LaBr3 /AEBr2 (AE = Mg, Ca, Sr, Ba) eutectics were grown using the Bridgman–Stockbarger (BS) method in quartz ampoules. The eutectics (AE = Mg and Ca) showed optical transparency like optical fiber bundles. A grown Ce-doped LaBr3 /MgBr2 eutectic shows a 355 nm emission ascribed to Ce3+ 4f-5d transition under X-ray excitation. The smaller the ionic size of AE, the higher the light yield of the sample was. The light yield of Ce:LaBr3 /MgBr2 was 34,300 photon/MeV, which is higher than Ce:LYSO standard. Scintillation decay time under 662 keV gamma-ray excitation was 18.8 ns.

Original languageEnglish
Article number584
Pages (from-to)1-9
Number of pages9
JournalCrystals
Volume10
Issue number7
DOIs
Publication statusPublished - 2020 Jul

Keywords

  • Directional solidification
  • Growth from melt
  • Halides
  • Scintillators

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Inorganic Chemistry

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