Similarity of trap state and thermoluminescence processes of Y3Al5O12 (YAG):Ce for X-ray and UV irradiation

Masanori Koshimizu, Takayuki Yanagida, Kiyomitsu Shinsho, Shin Yanagisawa, Yutaka Fujimoto, Hideki Yagi, Takagimi Yanagitani, Keisuke Asai

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We have compared the trap states of electrons and holes responsible for the thermoluminescence of Y3Al5O12(YAG):Ce crystals and ceramics after X-ray or UV irradiation. In the case of X-rays, electrons and holes are trapped at different sites, whereas UV irradiation affords the photo-ionization of Ce3+ ions, in which electrons are trapped on certain sites and the holes afford Ce4+ ions. We found a dominant band in the thermoluminescence spectra after irradiation, attributed to the 5d–4f transitions of Ce3+ ions. The glow curves in both cases have peaks present at the same temperatures and have similar relative intensities. These results indicate that both the trap states and thermoluminescence processes are similar between the types of irradiation.

Original languageEnglish
Pages (from-to)285-289
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume435
DOIs
Publication statusPublished - 2018 Nov 15

Keywords

  • Thermoluminescence
  • Trap state
  • YAG:Ce

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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