Luminescence and light yield of (Gd2Y)(Ga3Al2)O12:Pr3+ single crystal scintillators

Prapon Lertloypanyachai, Nichakorn Pathumrangsan, Krittiya Sreebunpeng, Nakarin Pattanaboonmee, Weerapong Chewpraditkul, Akira Yoshikawa, Kei Kamada, Martin Nikl

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Abstract

Praseodymium-doped (Gd2Y)(Ga3Al2)O12 (GYGAG: Pr) single crystals are grown by the micro-pulling down method with different Pr concentrations. The energy transfer process between Pr3+ and Gd3+ is investigated by photoluminescence excitation (PLE) and emission (PL) spectra measurements. Photoelectron yield measurements are carried out using photomultiplier. At 662 keV γ-rays, photoelectron yield of 2520 phe/MeV obtained for the GYGAG: Pr (0.01%) sample is larger than that of 1810 phe/MeV obtained for BGO crystal. Light yield degradation for the GYGAG: Pr scintillators is presumably due to the energy transfer from 5d state of Pr3+ to 4f state of Gd3+ together with the concentration quenching in the Gd3+-sublattice.

Original languageEnglish
Pages (from-to)369-372
Number of pages4
JournalJournal of Crystal Growth
Volume468
DOIs
Publication statusPublished - 2017 Jun 15

Keywords

  • A1.Luminescence
  • A1.Photoelectron yield
  • A1.Scintillation
  • B1.(GdY)(GaAl)O:Pr

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry

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    Lertloypanyachai, P., Pathumrangsan, N., Sreebunpeng, K., Pattanaboonmee, N., Chewpraditkul, W., Yoshikawa, A., Kamada, K., & Nikl, M. (2017). Luminescence and light yield of (Gd2Y)(Ga3Al2)O12:Pr3+ single crystal scintillators. Journal of Crystal Growth, 468, 369-372. https://doi.org/10.1016/j.jcrysgro.2016.10.018