Scintillation properties of Eu and alkaline metal co-doped LiCaAlF6

Takayuki Yanagida, Masanori Koshimizu, Yutaka Fujimoto, Kentaro Fukuda, Kenichi Watanabe, Go Okada, Noriaki Kawaguchi

研究成果: Contribution to journalArticle査読

6 被引用数 (Scopus)

抄録

Very low amount of Eu and alkali metal (Na, K, Rb and Cs) co-doped LiCaAlF6 crystal scintillators were prepared by using the micro-pulling down method to investigate the origin of the light yield enhancement and the fast luminescence of LiCaAlF6-based scintillators. In X-ray and α-ray induced scintillation spectra, the host and Eu2+ 5d-4f transition emission appeared around 300–500 nm as a broad shape and 370 nm as a sharp line, respectively. At a synchrotron facility (UVSOR), the excitation spectra under vacuum ultra violet (VUV) photons excitation were investigated, and the results confirmed new excitation bands around 80–90 nm as well as the band gap of LiCaAlF6 (~113 nm). Fast luminescence with the lifetime of few ns was confirmed in K, Rb and Cs doped samples under VUV and X-ray excitations. The detector property was tested, and K co-doping improves the pulse shape discrimination performance.

本文言語英語
ページ(範囲)22-27
ページ数6
ジャーナルJournal of Luminescence
191
DOI
出版ステータス出版済み - 11 2017
外部発表はい

All Science Journal Classification (ASJC) codes

  • 生物理学
  • 生化学
  • 化学 (全般)
  • 原子分子物理学および光学
  • 凝縮系物理学

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