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 language | English |
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Pages (from-to) | 1930-1933 |
Number of pages | 4 |
Journal | Optical Materials |
Volume | 36 |
Issue number | 12 |
DOIs | |
Publication status | Published - 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