Light Yield and Timing Characteristics of Lu.Gd.(Al5-xGax)O:Ce,Mg Single Crystals

Ongsa Sakthong, Warut Chewpraditkul, Nakarin Pattanaboonmee, Weerapong Chewpraditkul, Akihiro Yamaji, Kei Kamada, Shunsuke Kurosawa, Akira Yoshikawa, Marcin Witkowski, Winicjusz Drozdowski, Tomaz Szczesniak, Marek Moszynski, Vladimir Babin, Martin Nikl

Research output: Contribution to journalArticlepeer-review

Abstract

The scintillation characteristics of Lu0.8Gd2.2 (Al5-xGax)O12:Ce,Mg ( $x = 2.6$ and 3) single crystals grown by the micropulling down method are investigated. The light yield of 27600 photons/MeV obtained for Lu0.8Gd2.2Al2Ga3O12:Ce,Mg is higher than that of 25 400 photons/MeV obtained for Lu0.8Gd2.2Al2.4Ga2.6O12:Ce,Mg. The photoluminescence and scintillation decays measured at room temperature (RT) for Lu0.8Gd2.2Al2Ga3O12:Ce,Mg are faster than those for Lu0.8Gd2.2Al2.4Ga2.6O12:Ce,Mg. Temperature dependence of radioluminescence (RL) intensity indicates a lower quenching temperature for Lu0.8Gd2.2Al2Ga3O12:Ce,Mg. Coincidence time resolution of a Lu0.8Gd2.2Al2Ga3O12:Ce,Mg detector in coincidence experiment with a BaF2 detector was measured to be 410 ps. The afterglow and thermally stimulated luminescence (TSL) characteristics below RT are also measured.

Original languageEnglish
Article number9127538
Pages (from-to)2295-2299
Number of pages5
JournalIEEE Transactions on Nuclear Science
Volume67
Issue number10
DOIs
Publication statusPublished - 2020 Oct

Keywords

  • Coincidence time resolution (CTR)
  • light yield (LY)
  • Lu₀.₈Gd₂.₂(Al₅-ₓGax)O₁₂:Ce,Mg (LGAGG:Ce,Mg)
  • radioluminescence (RL)
  • scintillation decays

ASJC Scopus subject areas

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

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