Crystal growth and scintillation properties of Ce3+ and Mg 2+ co-doped LiCaAlF6 single crystal

Akihiro Yamaji, Yutaka Fujimoto, Takayuki Yanagida, Noriaki Kawaguchi, Yoshisuke Futami, Yuui Yokota, Akira Yoshikawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Ce and Mg co-doped LiCaAlF6 (LiCAF) single crystals were grown by micro-pulling-down (μ-PD) method and the optical and scintillation properties of obtained crystals were measured. The grown crystals were crack-free and had 30-50 mm in length and 2 mm in diameter. Absorption coefficients were proportional to the Ce nominal concentrations. The radioluminescence spectra under 5.5 MeV alpha-ray irradiation showed emission peak at 290 and 310 nm due to Ce3+ 5d-4f transitions, and were agreement with those of Ce single-doped LiCAF. The highest light yield under 5.5 MeV alpha-ray irradiation of Ce 4% and Mg 2% co-doped LiCAF was found to be 0.6 times than that of lithium glass scintillator GS-20. Comparing the light yield of LiCAF samples with the fixed Ce nominal concentration and different Mg co-doped concentrations, the light yield increased with an increase of Mg nominal concentration. The alpha-ray excited decay times were constantly 45-50 ns.

Original languageEnglish
Title of host publicationMaterials Integration
PublisherTrans Tech Publications Ltd
Pages240-246
Number of pages7
ISBN (Print)9783037853764
DOIs
Publication statusPublished - 2012
EventInt. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011 - Sendai, Japan
Duration: 2011 Dec 12011 Dec 2

Publication series

NameKey Engineering Materials
Volume508
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Other

OtherInt. Symposium of GCOE: Materials Integration, in Conjunction with the 2nd Int. Symposium on Advanced Synthesis and Processing Technology for Materials, ASPT 2011 and the 8th Materials Science School for Young Scientists, KINKEN-WAKATE 2011
CountryJapan
CitySendai
Period11/12/111/12/2

Keywords

  • Co-doping
  • Micro-pulling-down method
  • Neutron scintillator
  • Single crystal

ASJC Scopus subject areas

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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