Scintillation properties of LiF-SrF2 and LiF-CaF2 eutectic

Takayuki Yanagida, Noriaki Kawaguchi, Yutaka Fujimoto, Kentaro Fukuda, Kenichi Watanabe, Atsushi Yamazaki, Akira Uritani

Research output: Contribution to journalArticle

34 Citations (Scopus)

Abstract

Dopant free eutectic scintillators 6LiF-SrF2 and 6LiF-CaF2 were developed by the vertical Bridgeman method for the purpose of thermal neutron detection. The molar ratio of LiF and Ca/SrF2 was 4:1 on its eutectic composition. The α-ray induced radioluminescence spectra of the scintillators showed intense emission peak at 300 nm due to the emission from the self-trapped exciton in Ca/SrF2 layers. When the samples were irradiated with 252Cf neutrons, 6LiF-SrF2 and 6LiF-CaF2 exhibited the light yields of 4700 and 9400 ph/n, respectively. Scintillation decay times of 6LiF-SrF2 and 6LiF-CaF2 were accepted for scintillation detectors, 90 and 250 ns, respectively.

Original languageEnglish
Pages (from-to)212-216
Number of pages5
JournalJournal of Luminescence
Volume144
DOIs
Publication statusPublished - 2013 Aug 12
Externally publishedYes

Keywords

  • Eutectic scintillators
  • LiF and CaF layers
  • LiF and SrF layers
  • Neutron detection
  • Self-trapped exciton

ASJC Scopus subject areas

  • Biophysics
  • Biochemistry
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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  • Cite this

    Yanagida, T., Kawaguchi, N., Fujimoto, Y., Fukuda, K., Watanabe, K., Yamazaki, A., & Uritani, A. (2013). Scintillation properties of LiF-SrF2 and LiF-CaF2 eutectic. Journal of Luminescence, 144, 212-216. https://doi.org/10.1016/j.jlumin.2013.07.016