Luminescence properties and scintillation response in Ce3+-doped Y2Gd1Al5-xGaxO12 (x = 2, 3, 4) single crystals

Warut Chewpraditkul, Dalibor Pánek, Petr Brůža, Weerapong Chewpraditkul, Chalerm Wanarak, Nakarin Pattanaboonmee, Vladimir Babin, Karol Bartosiewicz, Kei Kamada, Akira Yoshikawa, Martin Nikl

研究成果: Article査読

14 被引用数 (Scopus)

抄録

The compositional dependence of luminescence properties and scintillation response were investigated in Ce3+-doped Y2Gd 1Al5-xGaxO12 (x=2, 3, 4) single crystals. The Gd3+ → Ce3+ energy transfer was evidenced by photoluminescence excitation spectra of Ce3+ emission. With increasing Ga content in the garnet host, the Ce3+ luminescence from the lowest 5d level (5d1) is shifted toward higher energy due to the decrease in the crystal field splitting of the 5d levels. Light yield (LY) and its dependence on the amplifier shaping time were measured under excitation with γ-rays. High LY value of ∼38000ph/MeV was obtained for a Y 2Gd1Al3Ga2O12:Ce sample. Scintillation decay was measured with an extended dynamical and temporal scale under the nanosecond pulse soft X-ray excitation. The decrease of both LY value and relative contribution of slower decay component in the scintillation response was observed with increasing Ga content in the garnet host.

本文言語English
論文番号083505
ジャーナルJournal of Applied Physics
116
8
DOI
出版ステータスPublished - 2014 1 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)

フィンガープリント 「Luminescence properties and scintillation response in Ce<sup>3+</sup>-doped Y<sub>2</sub>Gd<sub>1</sub>Al<sub>5-x</sub>Ga<sub>x</sub>O<sub>12</sub> (x = 2, 3, 4) single crystals」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

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