4 September 2008 Transparent ceramic scintillator fabrication, properties, and applications
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Proceedings Volume 7079, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X; 70790X (2008); doi: 10.1117/12.797398
Event: Optical Engineering + Applications, 2008, San Diego, California, United States
Abstract
Transparent ceramics offer an alternative to single crystals for scintillator applications such as gamma ray spectroscopy and radiography. We have developed a versatile, scaleable fabrication method, using Flame Spray Pyrolysis (FSP) to produce feedstock which is readily converted into phase-pure transparent ceramics. We measure integral light yields in excess of 80,000 Ph/MeV with Cerium-doped Garnets, and excellent optical quality. Avalanche photodiode readout of Garnets provides resolution near 6%. For radiography applications, Lutetium Oxide offers a high performance metric and is formable by ceramics processing. Scatter in transparent ceramics due to secondary phases is the principal limitation to optical quality, and afterglow issues that affect the scintillation performance are presently being addressed.
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N. J. Cherepy, J. D. Kuntz, J. J. Roberts, T. A. Hurst, O. B. Drury, R. D. Sanner, T. M. Tillotson, S. A. Payne, "Transparent ceramic scintillator fabrication, properties, and applications", Proc. SPIE 7079, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics X, 70790X (4 September 2008); doi: 10.1117/12.797398; https://doi.org/10.1117/12.797398
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KEYWORDS
Ceramics

Garnet

Scintillators

Gadolinium

Radiography

Gamma radiation

Oxides

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