Scintillation yield enhancement in LuAG:Pr crystals following thermal annealing

W. Drozdowski, K. Brylew, A. Chruścińska, K. Kamada, T. Yanagida, A. Yoshikawa

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Effects of thermal annealing in various atmospheres of Czochralski-grown Lu3Al5O12:Pr (LuAG:Pr) crystals on their scintillation yield and energy resolution are discussed. It is shown that annealing in argon, air, or oxygen at 1373 K for 48 h is a simple way of achieving a ten-odd percent increase of yield together with an improvement of energy resolution. High temperature thermoluminescence measurements indicate significant reductions of trap concentrations in the annealed crystals compared to the "as grown" ones, which correlates well with the observed yield increase. A simple model is proposed to predict further available yield enhancement in LuAG:Pr upon thermal annealing.

Original languageEnglish
Pages (from-to)1975-1978
Number of pages4
JournalOptical Materials
Volume34
Issue number12
DOIs
Publication statusPublished - 2012 Oct

Keywords

  • Czochralski method
  • LuAG
  • Praseodymium
  • Scintillation yield
  • Scintillator
  • Thermoluminescence

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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