The Stable Ce4+ Center: A New Tool to Optimize Ce-Doped Oxide Scintillators

Martin Nikl, Vladimir Babin, Jan Pejchal, Valentin V. Laguta, Maksym Buryi, Jiri A. Mares, Kei Kamada, Shunsuke Kurosawa, Akira Yoshikawa, Dalibor Panek, Tomas Parkman, Petr Bruza, Klaus Mann, Matthias Muller

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

The role and effect of stable Ce4+ centers in Ce-doped LuAG single crystal scintillator is further studied by means of measurements of several optical, luminescence and scintillation characteristics. Two LuAG:Ce single crystal samples are compared: in one of them the dominating Ce4+ center is stabilized by high concentration Mg2+ codoping while the other one shows only the presence of stable Ce3+ center. Tailored (Eu, Mg)-doped LuAG single crystal is also prepared to test the presence and thermal stability of hole traps in the host which affect the timing characteristics of Ce4+ scintillation cycle, namely its restoration back to 4+ charge state in last step of the cycle. EPR experiment was also employed at Mg-and (Eu, Mg) doped LuAG samples and the signature of the O- hole center stabilized by Mg2+ ion was clearly obtained.

Original languageEnglish
Article number7412783
Pages (from-to)433-438
Number of pages6
JournalIEEE Transactions on Nuclear Science
Volume63
Issue number2
DOIs
Publication statusPublished - 2016 Apr

Keywords

  • Ce
  • LuAG
  • O
  • X-ray detection
  • gamma-ray detection
  • scintillator

ASJC Scopus subject areas

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

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