The divalent ion codoping effect on Ce-doped (Gd, La)2Si2O7 single crystals

Takahiko Horiai, Rikito Murakami, Shunsuke Kurosawa, Yasuhiro Shoji, Akihiro Yamaji, Jan Pejchal, Yuji Ohashi, Mototaka Arakawa, Kei Kamada, Yuui Yokota, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Ce-doped (Gd, La)2Si2O7 scintillators have fast decay time and keep high light output even at high temperature (∼150°C). To improve the scintillation properties such as light output and decay time, Ce-doped (Gd, La)2Si2O7 scintillators codoped with the divalent ions (e.g. Mg2+, Ca2+) have been studied. In this study, we focused on the other divalent ions (Sr2+ and Ba2+), and investigated their effect on the scintillation properties and temperature dependence of light output. The absorption due to Ce4+ was not observed for Sr or Ba codoping. The light outputs were degraded by Sr2+ or Ba2+ codoping, while the decay times at room temperature were not changed for the samples codoped with divalent ions. On the other hand, the temperature dependence of light output for Ba-codoped sample was improved, and the light output value at 175°C was 36,000 photons/MeV, which was 93% of that at 25°C.

Original languageEnglish
Pages (from-to)42-46
Number of pages5
JournalOptical Materials
Volume68
DOIs
Publication statusPublished - 2017 Jun

Keywords

  • Pyrosilicate
  • Scintillator
  • Temperature dependence

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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