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Ce Concentration Dependence of Optical and Scintillation Properties for Ce Doped {\rm LiYF}_{4} Single Crystals

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7 Author(s)
Yokota, Y. ; Inst. of Multidiscipl. Res. for Adv. Mater., Tohoku Univ., Miyagi, Japan ; Yanagida, T. ; Abe, N. ; Kawaguchi, N.
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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 0 ≤ 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.

Published in:

Nuclear Science, IEEE Transactions on  (Volume:57 ,  Issue: 3 )

Date of Publication:

June 2010

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