Optical, dosimetric, and scintillation properties of pure sapphire crystals

Yoshisuke Futami, Takayuki Yanagida, Yutaka Fujimoto

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Optical, dosimetric, and scintillation properties of undoped sapphire (Al2O3) single crystals fabricated by different methods of the Czochralski (Cz) and the Bridgman were investigated. In X-ray induced radioluminescence spectra, they showed emission peaks at 240 and 300nm due to exciton and F+ centers, respectively. Scintillation decay times of F+ center was fast around few ns. As a dosimetric property, from 0.01 to 2Gy X-ray was exposed to them and they exhibited a thermally stimulated luminescence (TSL) with a good linearity. The glow peaks of them were similar, 150, 250, and 325 °C. In TSL, the Bridgeman sample represented only F +-center emission while the Cz sample showed F at 400nm and F + at 300nm centers emission.

Original languageEnglish
Article number02BC12
JournalJapanese journal of applied physics
Volume53
Issue number2 PART 2
DOIs
Publication statusPublished - 2014 Feb 27
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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