Open AccessTransparent ceramic scintillator fabrication, properties, and applications
Author(s) -
Nerine J. Cherepy,
Joshua D. Kuntz,
Jeffery J. Roberts,
T. A. Hurst,
Owen B. Drury,
Robert D. Sanner,
Thomas M. Tillotson,
Sheila Payne
Publication year - 2008
Publication title -
proceedings of spie, the international society for optical engineering/proceedings of spie
Language(s) - English
Resource type - Conference proceedings
SCImago Journal Rank - 0.192
H-Index - 176
eISSN - 1996-756X
pISSN - 0277-786X
DOI - 10.1117/12.797398
Subject(s) - scintillator , materials science , ceramic , fabrication , lutetium , scintillation , transparent ceramics , optoelectronics , optics , cerium , photodiode , detector , yttrium , oxide , composite material , physics , medicine , alternative medicine , pathology , metallurgy
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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