Photoluminescence and scintillation properties of Eu-doped strontium aluminate crystals

Daisuke Nakauchi, Go Okada, Koshimizu Masanori, Naoki Kawano, Noriaki Kawaguchi, Takayuki Yanagida

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Eu-doped SrAl12O19, SrAl4O7, Sr4Al14O25 and SrAl2O4 bulk crystals were successfully synthesized by the floating zone method. The samples exhibit photoluminescence and scintillation with an intense broad emission due to the 5d-4f transitions of Eu2+ in the visible range, and Eu:SrAl12O19 shows additional several sharp emissions owing to Eu3+. The Eu2+ emission blue-shifts as the Al-ratio increases. Pulse height spectrum measurements under 137Cs γ-ray irradiation demonstrated a clear photoabsorption peak, in which the scintillation light yields were estimated to be 6,900 (Eu:SrAl12O19), 700 (Eu:SrAl4O7), 6,500 (Eu:Sr4Al14O25) and 42,000 (Eu:SrAl2O4) photons/MeV.

Original languageEnglish
Pages (from-to)273-277
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

  • Photoluminescence
  • Scintillation
  • Single crystal
  • Strontium aluminate

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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