Scintillation and luminescence properties of a single CsCaCl3 crystal

M. Koshimizu, N. Yahaba, R. Haruki, F. Nishikido, S. Kishimoto, K. Asai

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)

Abstract

We synthesized a fast scintillation material based on a ternary halide crystal, CsCaCl3, which is known to exhibit Auger-free luminescence (AFL) under core-level excitation. We characterized its luminescence properties using vacuum ultraviolet (VUV) light for excitation. We observed a broad AFL band centered at approximately 300 nm for the core hole excitation, with a decay time of 2.3 ns. In addition to AFL, we observed several luminescence bands for interband and sub-band-gap excitation. The scintillation light yield was estimated to be 410 photons/MeV. We observed a fast scintillation component due to the AFL having a decay time constant of 2.3 ns. This fast component accounts for 58% of the total scintillation. These results indicate that a fast scintillation material was successfully fabricated, employing AFL as the luminescence mechanism based on a ternary halide crystal.

Original languageEnglish
Pages (from-to)1930-1933
Number of pages4
JournalOptical Materials
Volume36
Issue number12
DOIs
Publication statusPublished - 2014 Oct

Keywords

  • Auger-free luminescence
  • Core hole
  • Core-valence luminescence
  • Scintillator
  • Self-trapped exciton

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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