Comparative study of transparent ceramic and single crystal Ce doped LuAG scintillators

Takayuki Yanagida, Yutaka Fujimoto, Yuui Yokota, Kei Kamada, Satoko Yanagida, Akira Yoshikawa, Hideki Yagi, Takagimi Yanagitani

Research output: Contribution to journalArticlepeer-review

47 Citations (Scopus)

Abstract

Transparent ceramic Ce 0.5% doped Lu3Al5O 12 (LuAG) scintillator grown by the sintering method and single crystalline Ce doped LuAG grown by the Czochralski method are prepared. They are cut to the physical dimensions 4 × 4 × 2 mm3. Their transmittance and radio luminescence spectra are evaluated. They are both transmissive in wavelength longer than 500 nm and intense Ce3+ 5d-4f emission appears around 520 nm. When 137Cs γ-ray is irradiated, 662 keV photo-absorption peaks are clearly observed in each sample. The transparent ceramic one shows higher light yield than that of the single crystalline one. The absolute light yield of the ceramic sample is turned out to be 14800 ± 1500 ph/MeV. The decay time constants are evaluated under pulse X-ray excitation. The main component of the decay time of ceramic and single crystalline one are determined as 37 and 46 ns, respectively.

Original languageEnglish
Pages (from-to)1503-1505
Number of pages3
JournalRadiation Measurements
Volume46
Issue number12
DOIs
Publication statusPublished - 2011 Dec 1

Keywords

  • Ceramic
  • Lu AlO
  • Scintillation detector
  • Scintillation yield
  • Single crystal

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

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