Scintillation properties of Eu-doped CsCl and CsBr crystals

Keiichiro Saeki, Masanori Koshimizu, Yutaka Fujimoto, Takayuki Yanagida, Go Okada, Takuma Yahaba, Hironori Tanaka, Keisuke Asai

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

Eu-doped CsCl and CsBr crystals were grown by the vertical Bridgman–Stockbarger method and the scintillation properties of the crystals were investigated. The radioluminescence (RL) bands of CsCl:Eu were observed at 245–270 nm and 450 nm. The former bands are attributed to Auger-free luminescence, and the latter band is attributed to Eu2+ 5d–4f transitions. CsBr:Eu showed an RL band at 435 nm, and this broad band is attributed to Eu2+ 5d–4f transitions. The scintillation decay-time constants of the slow components for CsCl:Eu and CsBr:Eu were 0.38 and 2.8 μs, respectively. Based on the pulse-height spectra for 662 keV gamma ray from 137Cs, the light yield of CsCl:Eu and CsBr:Eu are estimated to be 1700 and 2500 photons/MeV, respectively.

Original languageEnglish
Pages (from-to)125-128
Number of pages4
JournalOptical Materials
Volume61
DOIs
Publication statusPublished - 2016 Nov 1

Keywords

  • Alkali halide
  • Eu
  • Scintillator

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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