Scintillation properties of Yb3+-doped YAG transparent ceramics

Yutaka Fujimoto, Takayuki Yanagida, Shingo Wakahara, Hideki Yagi, Takagimi Yanagidani, Shunsuke Kurosawa, Akira Yoshikawa

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

We investigated scintillation properties of Yb3+-doped Y 3A5O12 (YAG) transparent ceramics with different dopant concentrations. The transparency of both 0.3% and 15% Yb 3+-doped exceeded 70% in the wavelength range 300-800 nm, and two kinds of absorption bands due to charge transfer (CT) transition and 4f-4f forbidden transition of Yb3+ were observed around 200-250 nm and 900 nm, respectively. Ultraviolet luminescence caused by the CT transition between Yb3+ and O2- was observed under α-ray excitation from 241Am sealed source. The scintillation decay times were determined to be about 2.2 ns (Yb 0.3%) and 1.4 ns (Yb 15%) using the streak camera system equipped with pulsed X-ray source. From 241Am alpha-ray-excited pulse height spectra, the relative scintillation light yield of 0.3% and 15% Yb3+-doped ceramics was 7% and 10% compared with that of BGO commercial scintillator.

Original languageEnglish
Pages (from-to)778-781
Number of pages4
JournalOptical Materials
Volume35
Issue number4
DOIs
Publication statusPublished - 2013 Jan 1

Keywords

  • Charge transfer (CT) transition
  • Scintillators
  • Transparent ceramic

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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