Scintillation characteristics of YAlO3:Pr perovskite single crystals

Krittiya Sreebunpeng, Patanachai Janthon, Weerapong Chewpraditkul, Tomasz Szczesniak, Martin Nikl, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

Abstract

The luminescence and scintillation characteristics of YAlO3:Pr (0.05, 0.51 and 1.1 mol%) single crystals were investigated. At 662 keV γ-rays, the light yield of 22,290 ± 1150, 13,070 ± 650 and 13,240 ± 650 ph/MeV was obtained, respectively, for YAP:Pr (0.05%), YAP:Pr (0.51%) and YAP:Pr (1.1%). In scintillation decays the intensity of fast component (9–12 ns) becomes enhanced with increasing Pr concentration in the crystals. The time resolution at 511 keV annihilation quanta was measured for YAP:Pr-PMT detector in coincidence experiment with a BaF2-PMT detector. The time resolution of 357 ± 19, 333 ± 18 and 268 ± 15 ps was obtained, respectively, for YAP:Pr (0.05%), YAP:Pr (0.51%) and YAP:Pr (1.1%). High concentration of shallow traps in both YAP:Pr (0.51%) and YAP:Pr (1.1%) samples was evidenced by means of thermoluminescence in the 20–350 K temperature range. The lower light yield obtained for YAP:Pr (0.51%) can be caused by the enhanced delayed radiative recombination at Pr3+ luminescence centers.

Original languageEnglish
Article number110161
JournalOptical Materials
Volume108
DOIs
Publication statusPublished - 2020 Oct

Keywords

  • Light yield
  • Scintillation decay
  • Thermoluminescence
  • Time resolution
  • YAP:Pr

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry
  • Organic Chemistry
  • Inorganic Chemistry
  • Electrical and Electronic Engineering

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