Single crystal growth and luminescence properties of CeF 3-CaF2 solid solution grown by the micro-pulling-down method

Akira Yoshikawa, Kyoung Jin Kim, Kenji Aoki, Kei Kamada, Fumio Saito, Jan Pejchal, Natalia Solovieva, Martin Nikl

研究成果: Article査読

11 被引用数 (Scopus)

抄録

(CexCa1-x)F2+x single crystal with x = 0.0001 - 0.03 were grown by the μ-PD method. Ce3+ doping in CaFa lattice gives rise to characteristic absorption and emission bands, which are governed by the characteristics of the isolated Ce3+ -F i- C4v pair centers and small clusters composed from these pairs. With increasing Ce concentration there is a strong increase of the absorption bands related to the cluster centres, but the radioluminescence spectra are always governed by the emission of the isolated Ce3+ -Fi- C4v pairs without noticeable changes in the emission band shape. Highest radioluminescence intensity is achieved for Ce0.1{%} concentration and above 1{%} of Ce the onset of concentration quenching is observed. Scintillation response is governed by the energy transfer from the CaFa host lattice and even for the Ce3{%} sample the dominant scintillation decay time is about 50{%} longer with respect to the photoluminescence decay time of Ce3+ -Fi- C4v pair centres. Energy transfer processes and the role of different Ce3+-based centers are discussed.

本文言語English
論文番号4545235
ページ(範囲)1484-1487
ページ数4
ジャーナルIEEE Transactions on Nuclear Science
55
3
DOI
出版ステータスPublished - 2008 6月

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学
  • 原子力エネルギーおよび原子力工学
  • 電子工学および電気工学

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