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Title: Lutetium oxide-based transparent ceramic scintillators

In one embodiment, a transparent ceramic of sintered nanoparticles includes gadolinium lutetium oxide doped with europium having a chemical composition (Lu.sub.1-xGd.sub.x).sub.2-YEu.sub.YO.sub.3, where X is any value within a range from about 0.05 to about 0.45 and Y is any value within a range from about 0.01 to about 0.2, and where the transparent ceramic exhibits a transparency characterized by a scatter coefficient of less than about 10%/cm. In another embodiment, a transparent ceramic scintillator of sintered nanoparticles, includes a body of sintered nanoparticles including gadolinium lutetium oxide doped with a rare earth activator (RE) having a chemical composition (Lu.sub.1-xGd.sub.x).sub.2-YRE.sub.YO.sub.3, where RE is selected from the group consisting of: Sm, Eu, Tb, and Dy, where the transparent ceramic exhibits a transparency characterized by a scatter coefficient of less than about 10%/cm.
Inventors:
; ; ;
Issue Date:
OSTI Identifier:
1236559
Assignee:
Lawrence Livermore National Security, LLC LLNL
Patent Number(s):
9,238,773
Application Number:
13/623,811
Contract Number:
AC52-07NA27344
Resource Relation:
Patent File Date: 2012 Sep 20
Research Org:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Other works cited in this record:

Effects of ball milling and post-annealing on the transparency of spark plasma sintered Lu2O3
journal, September 2011

Two-step pressure sintering of transparent lutetium oxide by spark plasma sintering
journal, August 2011

Upconversion luminescence of Tm3+ and Yb3+-codoped lutetium oxide nanopowders
journal, February 2008

Hole traps in Lu2O3:Eu ceramic scintillators. I. Persistent afterglow
journal, March 2004

Hole traps in Lu2O3:Eu ceramic scintillators. II. Radioluminescence and thermoluminescence
journal, March 2004

Terbium-activated heavy scintillating glasses
journal, January 2008

A new large area scintillator screen for X-ray imaging
journal, January 2004
  • Nagarkar, V. V.; Miller, S. R.; Tipnis, S. V.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 213, p. 250-254
  • DOI: 10.1016/S0168-583X(03)01600-8

Transparent Lu2O3:Eu ceramics by sinter and HIP optimization
journal, September 2011

Effects of scintillator on the detective quantum efficiency (DQE) of a digital imaging system
journal, February 2006
  • Farman, Taeko T.; Vandre, Robert H.; Pajak, John C.
  • Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, Vol. 101, Issue 2, p. 219-223
  • DOI: 10.1016/j.tripleo.2005.07.032

Effects of scintillator on the modulation transfer function (MTF) of a digital imaging system
journal, May 2005
  • Farman, Taeko T.; Vandre, Robert H.; Pajak, John C.
  • Oral Surgery, Oral Medicine, Oral Pathology, Oral Radiology, and Endodontology, Vol. 99, Issue 5, p. 608-613
  • DOI: 10.1016/j.tripleo.2004.08.013

Elaboration and scintillation properties of Eu3+-doped Gd2O3 and Lu2O3 sol–gel films
journal, June 2002
  • Garcı́a-Murillo, A.; Le Luyer, C.; Dujardin, C.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 486, Issue 1-2, p. 181-185
  • DOI: 10.1016/S0168-9002(02)00699-X

Synthesis and properties of Lu2O3 sol–gel films
journal, July 2001

A new lutetia-based ceramic scintillator for X-ray imaging
journal, August 2002
  • Lempicki, A.; Brecher, C.; Szupryczynski, P.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 488, Issue 3, p. 579-590
  • DOI: 10.1016/S0168-9002(02)00556-9

Photoluminescent properties of Ln2O3:Eu3+ (Ln=Y, Lu and Gd) prepared by hydrothermal process and sol–gel method
journal, February 2010

Review of medical imaging with emphasis on X-ray detectors
journal, July 2006
  • Hoheisel, Martin
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 563, Issue 1, p. 215-224
  • DOI: 10.1016/j.nima.2006.01.123

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