Comparative study of Tm-doped and Tm-Sc co-doped Lu3Al5O12 scintillator

Makoto Sugiyama, Takayuki Yanagida, Yutaka Fujimoto

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)


The crystals of Tm doped and Tm-Sc co-doped Lu3Al5O12 (LuAG) grown by the floating zone (FZ) method were examined for their optical and scintillation properties. In transmittance spectra, strong absorption lines due to Tm3+ 4f-4f transitions were observed. X-ray excited radioluminescence spectra were measured and broad and sharp emission peaks were detected. The former one was attributed to Sc3+ and the latter one was due to Tm3+ 4f-4f transitions. Scintillation yield enhancement due to Sc co-doping was observed by means of 137Cs pulse height spectra. Scintillation decay times were several tens of μs under pulse X-ray excitation.

Original languageEnglish
Pages (from-to)153-157
Number of pages5
JournalRadiation Measurements
Publication statusPublished - 2014 Dec
Externally publishedYes


  • Scintillator
  • Single crystal
  • Tm 4f-4f emission

ASJC Scopus subject areas

  • Radiation
  • Instrumentation


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