Nd concentration dependence on the optical and scintillation properties of Nd doped BaF2

Noriaki Kawaguchi, Takayuki Yanagida, Yoshisuke Futami, Kentaro Fukuda, Toshihisa Suyama, Yui Yokota, Akira Yoshikawa, Martin Nikl

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Nd concentration dependence on the scintillation properties of Nd x Ba1-x F2+x (x = 0.001-0.5) crystals were investigated. From X-ray induced emission spectra, the intensity from an intrinsic luminescence of BaF2 including core-valence luminescence and self-trapped-exciton (STE) emission were decreased with an increase of Nd concentration. Decay times under 241Am α-ray excitation were evaluated by the Photomultiplier Tube (PMT) Hamamatsu R8778 that was sensitive across the vacuum ultra-violet (VUV) and visible wavelength range. The average decay times indicated that Nd doped BaF2 with lower Nd concentration has obviously slower decay times than that of samples with higher Nd concentration because the decay time of STE emission was slower than that of the core-valence luminescence in BaF 2 and the emission of 5d-4f transition on Nd3+. The light yield of fast Nd3+ 5d-4f luminescence was quite lower than STE emission of BaF2.

Original languageEnglish
Pages (from-to)1325-1328
Number of pages4
JournalOptical Materials
Volume32
Issue number10
DOIs
Publication statusPublished - 2010 Jan 1

Keywords

  • Core-valence luminescence
  • Fluorides
  • Scintillator
  • VUV

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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