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Proceedings Paper

Transparent ceramic scintillators for gamma spectroscopy and MeV imaging
Author(s): N. J. Cherepy; Z. M. Seeley; S. A. Payne; E. L. Swanberg; P. R. Beck; D. J. Schneberk; G. Stone; R. Perry; B. Wihl; S. E. Fisher; S. L. Hunter; P. A. Thelin; R. R. Thompson; N. M. Harvey; T. Stefanik; J. Kindem
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Paper Abstract

We report on the development of two new mechanically rugged, high light yield transparent ceramic scintillators: (1) Ce-doped Gd-garnet for gamma spectroscopy, and (2) Eu-doped Gd-Lu-bixbyite for radiography. GYGAG(Ce) garnet transparent ceramics offer ρ = 5.8g/cm3, Zeff = 48, principal decay of <100 ns, and light yield of 50,000 Ph/MeV. Gdgarnet ceramic scintillators offer the best energy resolution of any oxide scintillator, as good as R(662 keV) = 3% (Si-PD readout) for small sizes and typically R(662 keV) < 5% for cubic inch sizes. For radiography, the bixbyite transparent ceramic scintillator, (Gd,Lu,Eu)2O3, or “GLO,” offers excellent x-ray stopping, with ρ = 9.1 g/cm3 and Zeff = 68. Several 10” diameter by 0.1” thickness GLO scintillators have been fabricated. GLO outperforms scintillator glass for high energy radiography, due to higher light yield (55,000 Ph/MeV) and better stopping, while providing spatial resolution of >8 lp/mm.

Paper Details

Date Published: 4 September 2015
PDF: 7 pages
Proc. SPIE 9593, Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVII, 95930P (4 September 2015); doi: 10.1117/12.2189156
Show Author Affiliations
N. J. Cherepy, Lawrence Livermore National Lab. (United States)
Z. M. Seeley, Lawrence Livermore National Lab. (United States)
S. A. Payne, Lawrence Livermore National Lab. (United States)
E. L. Swanberg, Lawrence Livermore National Lab. (United States)
P. R. Beck, Lawrence Livermore National Lab. (United States)
D. J. Schneberk, Lawrence Livermore National Lab. (United States)
G. Stone, Lawrence Livermore National Lab. (United States)
R. Perry, Lawrence Livermore National Lab. (United States)
B. Wihl, Lawrence Livermore National Lab. (United States)
S. E. Fisher, Lawrence Livermore National Lab. (United States)
S. L. Hunter, Lawrence Livermore National Lab. (United States)
P. A. Thelin, Lawrence Livermore National Lab. (United States)
R. R. Thompson, Lawrence Livermore National Lab. (United States)
N. M. Harvey, Lawrence Livermore National Lab. (United States)
T. Stefanik, Nanocerox, Inc. (United States)
J. Kindem, Cokiya, Inc. (United States)


Published in SPIE Proceedings Vol. 9593:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XVII
Larry Franks; Ralph B. James; Michael Fiederle; Arnold Burger, Editor(s)

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