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Proceedings Paper

Research and development of Ce-doped GSO scintillation crystals
Author(s): Mitsuru Ishii; Masaaki Kobayashi; Hiroyuki Ishibashi; Seikichi Akiyama; Charles L. Melcher
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Paper Abstract

We review the status quo and the history of development of Ce doped GSO (Gd2SiO5:Ce) single crystals, a typical heavy and fast scintillator of large light output. GSO:Ce has 6.7 g/cm3 in density, 1.38 cm in radiation length and 30-60 ns in decay constant. The light output is two times as large as BGO. It shows, overall, the best performance among all the scintillators developed until now. The radiation damage caused by gamma ray from Co, proton in GeV order and thermal neutrons were studied on GSO:Ce crystals with various Ce concentrations. A description is given on the luminescence mechanism by Ce in GSO and growth technology for crack-free large GSO crystals. We believe that GSO crystals are scintillators having all the excellent characteristics required for gamma ray detectors.

Paper Details

Date Published: 21 September 1994
PDF: 12 pages
Proc. SPIE 2305, Gamma-Ray Detector Physics and Applications, (21 September 1994); doi: 10.1117/12.187256
Show Author Affiliations
Mitsuru Ishii, Shonan Institute of Technology (Japan)
Masaaki Kobayashi, KEK National Lab. for High Energy Physics (Japan)
Hiroyuki Ishibashi, Hitachi Chemical Co., Ltd. (Japan)
Seikichi Akiyama, Hitachi Chemical Co., Ltd. (Japan)
Charles L. Melcher, Schlumberger Doll Research (United States)

Published in SPIE Proceedings Vol. 2305:
Gamma-Ray Detector Physics and Applications
Elena Aprile, Editor(s)

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