Comparative study of intrinsic luminescence in undoped transparent ceramic and single crystal garnet scintillators

Yutaka Fujimoto, Takayuki Yanagida, Hideki Yagi, Takagimi Yanagidani, Valery Chani

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Scintillation properties associated with intrinsic lattice defects of undoped Y3A5O12 (YAG) and Lu3A 5O12 (LuAG) transparent ceramics and single crystals are compared. The ceramics excited with X-ray demonstrated relatively low emission intensity when compared with that of the single crystals. Decay times of the ceramics and the single crystals were similar. These parameters were approximately 430 ns (YAG ceramic), 460 ns (YAG single crystal), 30 ns and 1090 ns (LuAG ceramic), and 25 ns and 970 ns (LuAG single crystal). According to the pulse height spectra recorded under 137Cs gamma-ray irradiation, the scintillation light yield of the both ceramics were about 2950 ± 290 ph/MeV. However, the single crystals had greater kight yield of about about 14,300 ± 1430 ph/MeV for YAG and 8350 ± 830 ph/MeV for LuAG.

Original languageEnglish
Pages (from-to)1926-1929
Number of pages4
JournalOptical Materials
Volume36
Issue number12
DOIs
Publication statusPublished - 2014 Jan 1
Externally publishedYes

Keywords

  • Garnet
  • Scintillator
  • Transparent ceramic

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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