Scintillation properties of Gd3(Al5-xGax)O12:Ce (x = 2.3, 2.6, 3.0) single crystals

Warut Chewpraditkul, Nakarin Pattanaboonmee, Ongsa Sakthong, Weerapong Chewpraditkul, Tomasz Szczesniak, Marek Moszynski, Kei Kamada, Shunsuke Kurosawa, Akira Yoshikawa, Martin Nikl

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Scintillation properties of Czochralski-grown Gd3(Al5-xGax)O12:Ce (x = 2.3, 2.6, 3.0) single crystals were investigated. With increasing Ga content in garnet host, the radioluminescence band due to 5d1 → 4f emission transition was blue-shifted due to a decrease in the crystal field splitting of the 5 d levels. At 662 keV γ rays, the LY value of 47,000, 55,100 and 51,900 ph/MeV was obtained for Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. In spite of a lower LY value, Gd3Al2.7Ga2.3O12:Ce shows good energy resolution of 4.1% due to its proportionality of LY. The ratio of LY values under excitation with α- and γ-rays (α/γ ratio) was also determined. The fast component decay time with relative intensity of 146 ns (66%), 142 ns (76%) and 112 ns (76%) was measured in the scintillation decay of Gd3Al2.7Ga2.3O12:Ce, Gd3Al2.4Ga2.6O12:Ce and Gd3Al2Ga3O12:Ce, respectively. Good coincidence time resolution of Gd3Al2Ga3O12:Ce is due to a high initial photon emission rate.

本文言語English
ページ(範囲)23-29
ページ数7
ジャーナルOptical Materials
81
DOI
出版ステータスPublished - 2018 7

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • コンピュータ サイエンス(全般)
  • 原子分子物理学および光学
  • 分光学
  • 物理化学および理論化学
  • 有機化学
  • 無機化学
  • 電子工学および電気工学

フィンガープリント

「Scintillation properties of Gd<sub>3</sub>(Al<sub>5-x</sub>Ga<sub>x</sub>)O<sub>12</sub>:Ce (x = 2.3, 2.6, 3.0) 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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