Origin of Fast Scintillation Components of LiCaAlF6 Crystals

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Published 17 May 2013 • Copyright (c) 2013 The Japan Society of Applied Physics
, , Citation Masanori Koshimizu et al 2013 Appl. Phys. Express 6 062601 DOI 10.7567/APEX.6.062601

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1 Department of Applied Chemistry, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan

2 Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, Kitakyushu 808-0196, Japan

3 Institute for Materials Research, Tohoku University, Sendai 980-8579, Japan

4 Department of Materials, Physics and Energy Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8601, Japan

5 Tokuyama Corporation, Shunan, Yamaguchi 745-0024, Japan

6 Institute of Materials Structure Science, High Energy Accelerator Research Organization, Tsukuba, Ibaraki 305-0801, Japan

Dates

  1. Received 11 April 2013
  2. Accepted 27 April 2013
  3. Published

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Abstract

The origin of the fast scintillation component of Ce-doped LiCaAlF6 crystal excited by gamma ray irradiation was studied with X-ray and vacuum ultraviolet (VUV) irradiation. A fast luminescence component was observed under VUV irradiation and was ascribed to luminescence at defects in the host matrix on the basis of VUV spectroscopy. No fast scintillation component was observed in the scintillation time profile under X-ray irradiation. The fast scintillation component under gamma ray irradiation can be concluded to be the result of Cherenkov radiation from energetic secondary electrons.

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10.7567/APEX.6.062601