Crystal growth and evaluation of scintillation properties of Eu and alkali-metal co-doped LiSrAlF6 single crystals for thermal neutron detector

Shingo Wakahara, Takayuki Yanagida, Yuui Yokota, Akihiro Yamaji, Jan Pejchal, Yutaka Fujimoto, Makoto Sugiyama, Shunsuke Kurosawa, Noriaki Kawaguchi, Kentaro Fukuda, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

In recent work, Na co-doping have found to improve the light output of Eu doped LiCaAlF6 (Eu:LiCAF) for thermal neutron scintillator. We grew Eu 2% and alkali metal 1% co-doped LiSAF crystals by Micro-Pulling down method to understand the effect of alkali metal co-doping on scintillation properties and mechanism compared with LiCAF. In photo- and α-ray induced radio-luminescence spectra of the all grown crystals, the emissions from d-f transition of Eu2+ were observed. Without relation to excitation source, decay times of co-doped LiSAF were longer than Eu only doped one. The light yield of Na, K and Cs co-doped LiSAF under 252Cf neutron excitation were improved. Especially, K co-doped Eu:LiSAF reached 33200 ph/n, which outperformed Eu only doped one by approximately 20%.

Original languageEnglish
Pages (from-to)2235-2238
Number of pages4
JournalPhysica Status Solidi (C) Current Topics in Solid State Physics
Volume9
Issue number12
DOIs
Publication statusPublished - 2012 Dec

Keywords

  • LiSrAlF
  • Scintillation yield
  • Scintillator material
  • Thermal neutron

ASJC Scopus subject areas

  • Condensed Matter Physics

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