Abstract

Radiation damage effects in lutetium, yttrium and gadolinium oxy-orthosilicates, Lu2SiO5:Ce, Y2SiO5:Ce, Gd2SiO5:Ce under γ- and protons irradiation have been investigated. Crystals were irradiated with a 60Co gamma source to a total dose of 2000 Gy and a high-rate 24-GeV proton beam at CERN PS, to a fluence of ~3.6 ×1013 p/cm2. Color centers created under irradiation, phosphorescence and its mechanism in the crystals are discussed.

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