We have investigated effects of Ce concentration on optical and scintillation properties for Ce doped LiYF4 [Ce:LiYF4] single crystals. Li(Y1-x,Cex,)F4 single crystals with more than 75% transparency were grown by micro-pulling-down method in the range of O ≤ x ≤ 0.03 and the crystals with x = 0.05, 0.1 had milky parts originated from remained starting materials. Photoluminescence spectra of all Ce:LiYF4 crystals indicated two emission peaks from Ce3+ ion which was substituted for Y3+ ion site. Light yield and decay time of α-ray irradiation for Ce:LiYF4 crystals were largely affected by Ce concentration and the largest light yield was observed for the crystal with x = 0.02. In contrast, the decay time systematically became faster with an increase of Ce concentration.
- Crystal growth
- Fluorine compounds
- Neutron scintillator
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Nuclear Energy and Engineering
- Electrical and Electronic Engineering