Development of Fast Scintillators for High-Energy Photon Detection

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Other Title
  • 高エネルギー光子検出用高速シンチレータの材料開発
  • 実験技術 高エネルギー光子検出用高速シンチレータの材料開発
  • ジッケン ギジュツ コウエネルギー ミツコ ケンシュツヨウ コウソク シンチレータ ノ ザイリョウ カイハツ

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Abstract

<p>Scintillation detectors with a fast response are widely required for high-energy photon detection. Inorganic crystals doped with rare-earth ions have scintillation decay time constants down to several tens of nanoseconds. To achieve much shorter scintillation decay, we developed several types of scintillators. Fast scintillation owing to core holes or self-trapped excitons have been achieved in insulator crystals. Fast and efficient scintillation of quantum-confined Wannier excitons was obtained in self-organized quantum well structure in organic-inorganic layered hybrid compounds. For plastic scintillators, their disadvantage for high-energy photon detection, i.e., low atomic numbers of the constituent elements resulting in low interaction probability and detection efficiency, has been overcome by addition of heavy metal oxide nanoparticles.</p>

Journal

  • Butsuri

    Butsuri 75 (7), 439-444, 2020-07-05

    The Physical Society of Japan

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