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Title: Fabrication of ceramic scintillators by laser sintering: the case of Lu 3 Al 5 O 12 :Pr
Abstract The fabrication of ceramic scintillators by laser sintering is briefly reviewed and current limitations discussed. The experimental work focused on the fabrication and characterization of undoped and Pr-doped Lu 3 Al 5 O 12 (LuAG). X-ray diffraction (XRD) and Raman spectroscopy were used to characterize the structure of the sintered ceramics, with XRD results suggesting the absence of residual thermal stresses. Collectively, Raman results suggested the incorporation of Pr to affect the structure and its dynamics. Broadening the peaks of the ceramics in relation to those from the single crystal revealed the presence of structural disorder. Scanning electron microscopy revealed intergrain porosity thus explaining the lack of optical transparency. Energy-dispersive X-ray spectroscopy (EDX) measurements showed Pr to be homogeneously distributed. Radioluminescence measurements under X-ray excitation as a function of the temperature were used to investigate intrinsic defects of the host, including anti-sites and F-type defects.  more » « less
Award ID(s):
1653016
NSF-PAR ID:
10417970
Author(s) / Creator(s):
; ; ; ;
Date Published:
Journal Name:
Japanese Journal of Applied Physics
Volume:
62
Issue:
1
ISSN:
0021-4922
Page Range / eLocation ID:
010601
Format(s):
Medium: X
Sponsoring Org:
National Science Foundation
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