Luminescence and scintillation properties of VUV scintillation crystals based on lu-admixed BaY 2 F 8

Jan Pejchal, Kentaro Fukuda, Martin Nikl, Noriaki Kawaguchi, Yuui Yokota, Takayuki Yanagida, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Nd and Tm-doped Lu-admixed BaY 2F 8 crystals were grown by micro-pulling-down method. Lu was added to modify the host matrix to suppress the unwanted energy transfer from exciton levels to the Tm 3+ 4f-levels. It was found that low Tm and Nd codoping does not bring much improvement of the scintillation performance and that 1%Nd-doped BaY 0.8Lu 1.2F 8 single crystal reached nearly the same scintillation efficiency as the LaF 3:Nd8% one, which is known as a suitable candidate for a VUV scintillator. It is clear there is a considerable room for an optimization of this material by changing the Lu/Y ratio and increasing the content of Nd. On the other hand, very high Tm concentrations (around 20%) suppress the excitonic emission (and also the 4f-4f emission) while increasing the 5d-4f one significantly.

Original languageEnglish
Article number6218206
Pages (from-to)2177-2182
Number of pages6
JournalIEEE Transactions on Nuclear Science
Volume59
Issue number5 PART 2
DOIs
Publication statusPublished - 2012

Keywords

  • Fluorides
  • X-ray and gamma-ray detection
  • rare-earth doping
  • scintillator

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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