Scintillation Characteristics of Mg²-Codoped Y0.8Gd2.2(Al-Ga)O12:Ce Single Crystals

Weerapong Chewpraditkul, Nakarin Pattanaboonmee, Warut Chewpraditkul, Ongsa Sakthong, Akihiro Yamaji, Kei Kamada, Shunsuke Kurosawa, Akira Yoshikawa, Winicjusz Drozdowski, Marcin E. Witkowski, Tomasz Szczesniak, Martyna Grodzicka, Marek Moszynski

Research output: Contribution to journalArticlepeer-review

Abstract

Scintillation characteristics of Y0.8Gd2.2 (Al5-xGax)O12:Ce,Mg ($x = 2.6$ and 3) single crystals are presented. At 662-keV $\gamma $-rays, the light yield of 35 600 photons/MeV obtained for Y0.8Gd2.2Al2Ga3O12:Ce,Mg is higher than that of 32 600 photons/MeV for Y0.8Gd2.2Al2.4Ga26O12:Ce,Mg. Scintillation decay components of 32.3 ns (52.4%) + 104 ns (47.6%) obtained for Y0.8Gd2.2Al2Ga3O12:Ce,Mg are faster than those of 11.5 ns (5%) + 51.2 ns (69%) + 302 ns (26%) obtained for Y0.8Gd2.2Al2.4Ga26O12:Ce,Mg. The coincidence time resolution of 336 and 389 ps was obtained, respectively, for Y0.8Gd2.2Al2Ga3O12:Ce,Mg-photomultiplier (PMT) and Y0.8Gd2.2Al2.4Ga26O12:Ce,Mg-PMT, in coincidence experiment with a BaF2-PMT detector. The radioluminescence yield at room temperature (RT) is comparable for both crystals while the yield below 130 K is about 20% higher for Y0.8Gd2.2Al2Ga3O12:Ce,Mg. Afterglow and thermally stimulated luminescence (TSL) below RT are also measured.

Original languageEnglish
Article number9007479
Pages (from-to)910-914
Number of pages5
JournalIEEE Transactions on Nuclear Science
Volume67
Issue number6
DOIs
Publication statusPublished - 2020 Jun

Keywords

  • Coincidence time resolution (CTR)
  • Mg
  • YGAGG:Ceg
  • light yield (LY)
  • radioluminescence (RL)
  • scintillation decays
  • thermoluminescence

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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