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Proceedings Paper

Transparent BaCl2:Eu2+ glass-ceramic scintillator
Author(s): Gang Chen; Jacqueline Johnson; Stefan Schweizer; John Woodford; Peter Newman; Douglas MacFarlane
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Paper Abstract

Scintillators are the backbone of high-energy radiation detection devices. Most scintillators are based on inorganic crystals that have applications in medical radiography, nuclear medicine, security inspection, dosimetry, and high-energy physics. In this paper, we present a new type of scintillator that is based on glass ceramics (composites of glasses and crystals). These scintillators are made from Eu2+-activated fluorozirconate glasses that are co-doped with Ba2+, La3+, Al3+, Na+, and Cl-. Subsequent heat treatment of the glasses forms BaCl2 nano-crystals (10-20 nm in size) that are embedded in the glass matrix. The resulting scintillators are transparent, efficient, inexpensive to fabricate, and easy to scale up. The physical structure and x-ray imaging performance of these glass-ceramic scintillators are presented, and an application of these materials to micro-computed tomography is demonstrated. Our study suggests that these glass-ceramic scintillators have high potential for medical x-ray imaging.

Paper Details

Date Published: 2 March 2006
PDF: 8 pages
Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61422X (2 March 2006); doi: 10.1117/12.654265
Show Author Affiliations
Gang Chen, Argonne National Lab. (United States)
Jacqueline Johnson, Argonne National Lab. (United States)
Stefan Schweizer, Argonne National Lab. (United States)
Univ. of Paderborn (Germany)
John Woodford, Argonne National Lab. (United States)
Peter Newman, Monash Univ. (Australia)
Douglas MacFarlane, Monash Univ. (Australia)

Published in SPIE Proceedings Vol. 6142:
Medical Imaging 2006: Physics of Medical Imaging
Michael J. Flynn; Jiang Hsieh, Editor(s)

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