Growth and optical properties of LiF/LaF3 eutectic crystals

Shunsuke Kurosawa, Akihiro Yamaji, Yuui Yokota, Yoshisuke Futami, Kei Nishimoto, Noriaki Kawaguchi, Kentaro Fukuda, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


Neutron imaging devices employing a scintillator can be used in various fields, and eutectic crystals can be suitable for the imaging with a fine position resolution of a few hundred micrometers. Since LiF and LaF3 have different refractive indexes of 1.41 and 1.64 at 300nm, respectively, the eutectic crystal is expected to behave as a scintillator with light guiding properties. Thus, the optical properties of Ce-doped LiF/LaF3 eutectic crystal grown by micro-pulling down method were investigated. The light output of LiF/Ce:LaF3 eutectic crystal was relatively small. The emission peaks at 300nm originating from Ce3+ of 5d-4f transition were observed under excitation by UV photons and 5.5MeV alpha rays. Moreover, the photo-luminescence decay time of Ce-doped LiF/LaF3 eutectic crystal was estimated to be 17±1ns.

Original languageEnglish
Pages (from-to)2111-2115
Number of pages5
JournalJournal of the European Ceramic Society
Issue number9
Publication statusPublished - 2014 Aug


  • Eutectic crystal
  • LiF
  • Neutron scintillator


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