Title :
The conversion of high energy radiation to visible light by luminescent ceramics
Author :
Rossner, W. ; Bodinger, H. ; Leppert, J. ; Grabmaier, B.C.
Author_Institution :
Siemens AG, Munich, Germany
fDate :
8/1/1993 12:00:00 AM
Abstract :
A study is presented of the properties of luminescent ceramics which are roughly based on rare-earth doped oxides, oxysulfides, garnets, and silicates. Exemplary luminescent ceramic specimens are prepared on the basis of (Y,Gd)2O3:Eu, Gd2 O2S:Pr,Ce, Gd3Ga5O12:Cr,Ce, and Y2SiO 5:Pr. The structural and luminescence properties are determined by microscopic surface analysis, scintillation spectroscopy, and optical and time-resolved spectroscopy. Micrographs of polished and chemically etched ceramic cross sections are obtained by optical and scanning electron microscopy. Emission spectra are measured under X-ray excitation (tungsten tube, 50 kV, 40 mA) by a 1/8 monochromator (500 nm blaze) and a S11-photomultiplier. Decay curves are determined
Keywords :
X-ray emission spectra; ceramics; crystal atomic structure of inorganic compounds; luminescence of inorganic solids; scanning electron microscope examination of materials; scintillation; time resolved spectra; Gd2O2S:Pr,Ce; Gd2O3:Eu; Gd3Ga5O12:Cr,Ce; X-ray excitation; Y2O3:Eu; Y2SiO5:Pr; decay curves; garnets; luminescent ceramics; microscopic surface analysis; optical spectroscopy; oxides; oxysulfides; rare-earth doped; scanning electron microscopy; scintillation spectroscopy; silicates; time-resolved spectroscopy; Ceramics; Chemicals; Electron optics; Etching; Garnets; Luminescence; Optical microscopy; Scanning electron microscopy; Spectroscopy; Stimulated emission;
Journal_Title :
Nuclear Science, IEEE Transactions on
