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Meeting Materials Science & Technology 2015
Symposium Ceramic Optical Materials
Presentation Title Transparent Ceramic Scintillators
Author(s) Nerine Cherepy, Zachary Seeley, Stephen Payne, Patrick Beck, Erik Swanberg, Brian Wihl, Steven Hunter, Scott Fisher, Peter Thelin, Daniel Schneberk, Gary Stone, Randall Thompson, Todd Stefanik, Joel Kindem
On-Site Speaker (Planned) Nerine Cherepy
Abstract Scope We report here on the development of two new mechanically rugged, air-stable transparent ceramic scintillators: (1) Ce-doped Gd-Garnet for gamma spectroscopy, and (2) Eu-doped Gd-Lu Bixbyite for radiography. We find that intersubstitutional ions in garnet ceramics promote phase stabilization for high transparency needed to form large-size (5 in3-scale), uniform transparent ceramics. Gd-garnet ceramic scintillators offer the best energy resolution of any oxide scintillator, R(662 keV) = 3.5% (silicon photodiode readout). For radiography, the transparent ceramic scintillator, (Gd,Lu,Eu)2O3, or “GLO,” offers excellent x-ray stopping, due to its Zeff = 68 and density of 9.1 g/cm3. High transparency is achieved by minimizing the formation of secondary phases by adding Gd to the Lu2O3 structure. We will describe scaleup of GLO to 11.5” in diameter by 0.1” thick sizes. It outperforms scintillator glass for high energy radiography due to its higher light yield and better stopping.
Proceedings Inclusion? Planned: MS&T all conference proceedings CD

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Cladded Single Crystal Fibers
Creation of New Material Science on Optical Ceramics
Effects of Varied Heat Treatments on Precipitation of Alumina in Astoichiometric Magnesium Aluminate Spinel
Fabrication of Transparent Magnesium Aluminate Spinel Ceramics using Two Kinds of Spinel Powder with Different Particle Sizes
Fundamental Study in the Processing of Transparent Ceramics
Highly Transparent Polycrystalline YAG Ceramics for Optical Applications
Laser Oscillation of Lu-based Oxide Ceramics by Spark Plasma Sintering
Low Absorption Spinel Windows for High Energy Lasers
NMR Spectroscopy of Paramagnetic Doped Ceramics to Determine Site Occupancy and Distribution
Novel Glass and Glass Ceramic Scintillators for Gamma-ray and Neutron Detection
Polycrystalline Transparent Yttrium Aluminum Garnet for Optical Applications
Praseodymium-doped SiAlON Red Phosphors Prepared by Polymer-derived Method
Processes and Characterizations of Ceramic Optical Fibers
Spark Plasma Sintering of Transparent Ceramics and Unusual Grain Growth
Synthesis and Processing of Transparent Ceramic Scintillators for Nuclear Radiation Detection
The Role of Scattering and Absorption on the Optical Properties of Birefringent Polycrystalline Ceramics: Modeling and Experiments
Transparent Ceramic Scintillators
Transparent Magnesium Aluminate Spinel Prepared via Microfluidization and Aqueous Slip-casting
Transparent Spinel by Microwave Sintering

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