Crystal growth and scintillation properties of Ho-Doped Lu 3Al 5O 12 single crystals

Makoto Sugiyama, Takayuki Yanagida, Yutaka Fujimoto, Daisuke Totsuka, Yuui Yokota, Shunsuke Kurosawa, Yoshisuke Futami, Akira Yoshikawa

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The crystals of 0.1, 0.5, 1, and 3% Ho doped Lu 3Al 5O 12 (Ho:LuAG) grown by the micro-pulling-down method were examined for their scintillation properties. At wavelengths longer than 300 nm, Ho:LuAG crystals demonstrated around 60% transparency with many absorption peaks attributed to Ho 3+ 4f 10-4f 10 transitions. When excited by 241Am α-ray to obtain radio luminescence spectra, broad host emission and four sharp Ho 3+ 4f 10-4f 10 emission peaks were detected in the visible region. Light yields and decay time profiles of the samples irradiated by 137Cs\gamma-ray were measured using photomultiplier tubes R7600 (Hamamatsu). Ho 0.5%:LuAG showed the highest light yield of 3100 ±310 photons/MeV among the present samples. The decay time profiles were well reproduced by two components exponential approximation consisting of 0.5-1 μs and 3-6 μs.

Original languageEnglish
Article number6180202
Pages (from-to)2141-2145
Number of pages5
JournalIEEE Transactions on Nuclear Science
Volume59
Issue number5 PART 2
DOIs
Publication statusPublished - 2012 Apr 17

Keywords

  • Crystalline materials
  • Ho doping
  • LuAG crystal
  • gamma ray detectors
  • materials testing
  • radiation detectors

ASJC Scopus subject areas

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

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