Tl2LiYCl6 (Ce3+): New Tl-based Elpasolite Scintillation Material

H. J. Kim, Gul Rooh, H. Park, Sunghwan Kim

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

New single crystals of Ce-doped (1% and 10%) Tl2LiYCl6 (TLYC) were investigated under X-ray and γ-ray excitation. This material belongs to Chloro-elpasolite crystal family and was grown by the two-zone vertical Bridgman technique. X-ray-induced luminescence shows typical Ce3+ - ion emission between 350 and 530 nm peaking at 430 nm. Under 662 keV γ-rays excitation, best energy resolution of 4.8% (FWHM) was found for 1% Ce-concentration. For the same Ce-concentration, a maximum light yield of ∼30 500 ± 3500 ph/MeV was observed at room temperature. Under γ-ray excitation, three decay time components were observed for all Ce-doped samples. Effective Z-number and density of Tl2LiYCl6 were found to be 69 and 4.58 g/cm3, respectively. Due to highly hygroscopic nature of this compound, extra attention was devoted during handling and data taking processes. Overall, the scintillation properties confirm that this material is a promising candidate for medical imaging and radiation detection.

Original languageEnglish
Article number7454845
Pages (from-to)439-442
Number of pages4
JournalIEEE Transactions on Nuclear Science
Volume63
Issue number2
DOIs
StatePublished - Apr 2016

Keywords

  • Decay time
  • TlLiYCl
  • X-ray excitation
  • elpasolite
  • energy resolution
  • light yield
  • scintillation properties

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