Transparent BaCl<sub>2</sub>:Eu<sup>2+</sup> glass-ceramic scintillator

Gang Chen; Jacqueline Johnson; Stefan Schweizer; John Woodford; Peter Newman; Douglas MacFarlane

doi:10.1117/12.654265

2 March 2006 Transparent BaCl₂:Eu²⁺ glass-ceramic scintillator

Gang Chen, Jacqueline Johnson, Stefan Schweizer, John Woodford, Peter Newman, Douglas MacFarlane

Proceedings Volume 6142, Medical Imaging 2006: Physics of Medical Imaging; 61422X (2006) https://doi.org/10.1117/12.654265
Event: Medical Imaging, 2006, San Diego, California, United States

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.

Citation Download Citation

Gang Chen, Jacqueline Johnson, Stefan Schweizer, John Woodford, Peter Newman, and Douglas MacFarlane "Transparent BaCl₂:Eu²⁺ glass-ceramic scintillator", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61422X (2 March 2006); https://doi.org/10.1117/12.654265

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