Growth and characterization of strontium metaborate scintillators

Yutaka Fujimoto, Takayuki Yanagida, Yuui Yokota, Noriaki Kawaguchi, Kentaro Fukuda, Daisuke Totsuka, Kenichi Watanabe, Atsushi Yamazaki, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

The undoped and 0.5% Ce3+-doped strontium metaborate SrB 2O4 single crystals has been grown successfully by micro-pulling down method with radio frequency (RF) heating system, and scintillation characteristics including optical properties and radiation response were studied for these crystals. The Ce3+-doped SrB 2O4 crystal showed absorption band around 240-320 nm, which is corresponding to the 4f-5d transition of Ce3+. Intense emission band at 375 nm due to the Ce3+ 5d-4f transition was observed under 241Am 5.5 MeV α-ray excitation. The scintillation decay time showed fast (50 ns) and slow (1430 ns) components ascribed to the Ce 3+ 5d-4f transition and lattice defect in the crystal, respectively. The scintillation light yield of Ce3+-doped SrB2O 4 was calculated to be about 1000 ph/n under 252Cf irradiation.

Original languageEnglish
Pages (from-to)444-447
Number of pages4
JournalOptical Materials
Volume34
Issue number2
DOIs
Publication statusPublished - 2011 Dec

Keywords

  • Crystal growth
  • Micro-pulling down (μ-PD)
  • Scintillators

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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