New Lutetium Silicate Scintillators |
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| Authors: | Eric Bescher SR Robson JD Mackenzie B Patt J Iwanczyk EJ Hoffman |
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| Institution: | (1) Department of Materials Science, University of California Los Angeles, Los Angeles, CA 90095, USA;(2) Photon Imaging, 19355 Business Center Drive, Northridge, CA 91324, USA;(3) School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA |
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| Abstract: | Cerium-doped lutecium orthosilicate (LSO) is the most promising scintillator discovered in almost five decades. It exhibits a unique combination of important properties for x and gamma-ray spectroscopy: high density, fast decay, and large light yield. However, the practical use of LSO is hindered by difficulties related to its fabrication as a single crystal by the Czochralski method. We report on the usefulness of the sol-gel process in obtaining lutecium silicate scintillators. Upon appropriate drying and firing, lutetium silicate crystals can be grown in a silica matrix. The bulk, polycrystalline transparent scintillators are characterized by XRD, optical absorption, light decay measurement and gamma-ray spectral response. Their properties are comparable to that of traditional LSO single crystals. |
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| Keywords: | lutecium orthosilicate sol-gel glass-ceramics scintillators Lu2SiO5 |
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