Auger-free luminescence characteristics of Rb₁₋<i>_x</i>Cs<i>_x</i>CaCl₃

• TAKAHASHI Keisuke

  Department of Applied Chemistry, Graduate School of Engineering, Tohoku University

• KOSHIMIZU Masanori

  Department of Applied Chemistry, Graduate School of Engineering, Tohoku University

• FUJIMOTO Yutaka

  Department of Applied Chemistry, Graduate School of Engineering, Tohoku University

• YANAGIDA Takayuki

  Graduate School of Materials Science, Nara Institute of Science and Technology (NAIST)

• ASAI Keisuke

  Department of Applied Chemistry, Graduate School of Engineering, Tohoku University

Bibliographic Information

Other Title

• Auger-free luminescence characteristics of Rb1-xCsxCaCl3

Abstract

Fast scintillation materials based on ternary halide mixed crystals, Rb_1−xCs_xCaCl₃ were synthesized. Broad luminescence bands were observed around 360 nm and can be ascribed to Auger-free Luminescence (AFL) for vacuum ultraviolet core-level excitation. Several luminescence bands for interband excitation were also observed. For X-ray excitation, the band that is ascribed to AFL could be clearly detected. The scintillation decay components due to the AFL had decay time constant of 0.8 ns for RbCaCl₃ and 2.0 ns for Rb_1−xCs_xCaCl₃ (x ≠ 0). CsCaCl₃ had the largest light yield of the AFL component, exceeding 1200 photons/MeV, which was slightly lower than that of BaF₂. The light yield of the AFL component increased linearly with Cs content.

Journal

• Journal of the Ceramic Society of Japan

  Journal of the Ceramic Society of Japan 126 (10), 755-760, 2018-10-01

  The Ceramic Society of Japan

Keywords

• Auger-free luminescence
• Core-valence luminescence
• Core hole
• Scintillator

Details

• CRID: 1390564238027508736
• NII Article ID: 130007493492
• DOI: 10.2109/jcersj2.18051
• ISSN: 13486535
• ISSN: 18820743
• Web Site: https://www.jstage.jst.go.jp/article/jcersj2/126/10/126_18051/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed