Dopant concentration dependence of radiation-induced positive hysteresis of Ce:GSO and Ce:GSOZ

Takayuki Yanagida, Yutaka Fujimoto, Kenichi Watanabe

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Positive hysteresis and radiation tolerance to high-dose radiation exposure were investigated for Ce 0.5, 1, and 1.5%-doped Gd2SiO5 (GSO) and for Zr co-doped GSO with the same Ce concentrations (GSOZ). When they were irradiated by 200-800 Gy 60Co in 200 Gy steps, all Ce-doped GSO samples exhibited light yield enhancement (positive hysteresis). On the other hand, the light yield of GSOZ decreased greatly. Ce 0.5%-doped GSO showed the highest positive hysteresis, with ∼20% light yield enhancement. When the Ce concentration was increased, the positive hysteresis became weaker.

Original languageEnglish
Pages (from-to)16-20
Number of pages5
JournalRadiation Measurements
Volume61
DOIs
Publication statusPublished - 2014 Feb
Externally publishedYes

Keywords

  • GSO
  • GSO:Ce
  • GSO:Ce Zr codoped
  • Gamma-ray
  • Positive hysteresis
  • Scintillation detector
  • Single crystal

ASJC Scopus subject areas

  • Radiation
  • Instrumentation

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