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Optical, dosimetric, and scintillation properties of pure sapphire crystals

Japanese Journal of Applied Physics, ISSN: 0021-4922, Vol: 53, Issue: 2 PART 2
2014
  • 14
    Citations
  • 0
    Usage
  • 22
    Captures
  • 0
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Metrics Details

  • Citations
    14
    • Citation Indexes
      14
  • Captures
    22

Article Description

Optical, dosimetric, and scintillation properties of undoped sapphire (AlO) 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. © 2014 The Japan Society of Applied Physics.

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