Dosimeter properties of Ce and Eu doped LiCaAlF6

Takayuki Yanagida, Yutaka Fujimoto, Kenichi Watanabe, Kentaro Fukuda

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Optical, scintillation properties, optical stimulated luminescence, and thermally stimulated luminescence of Ce 1, 3, and 5% doped and Eu 1, 1.5, and 2% doped LiCaAlF6 crystals fabricated by Tokuyama Corp. were investigated. In transmittance, absorption was proportional to dopant concentrations and typical optical quantum yield of Ce and Eu-doped LiCaAlF6 were 40 and 100%, respectively. Scintillation wavelength and decay time profiles were investigated under X-ray irradiation. Ce3+ and Eu2+ 5d-4f luminescence appeared around 300 nm and 370 nm with typical decay time of 40 ns and 1.5 ms, respectively. Optically stimulated luminescence of Ce-doped ones appeared under 405 nm stimulation with detectable intensity while those of Eu doped ones were quite weak. Thermally stimulated luminescence of Ce- and Eu-doped LiCaAlF6 were enough strong and they exhibited good response function from 1 to 1000 mGy exposure.

Original languageEnglish
Pages (from-to)148-152
Number of pages5
JournalRadiation Measurements
Volume71
DOIs
Publication statusPublished - 2014 Dec

Keywords

  • Ce
  • Eu
  • LiCaAlF
  • OSL
  • Scintillation
  • Scintilltor
  • TSL

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

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