Abstract
Cerium doped Gd3(Al,Ga)5O12 (GGAG) ceramics with good performances have been fabricated in oxygen atmosphere. The microstructure, luminescence properties, and scintillation characteristics of the GGAG ceramics have been investigated with a Bi4Ge3O12 (BGO) single crystal as the reference sample. The photoluminescence emission of the GGAG ceramics peaked at about 558nm and matched well with the sensitivity of Si-based photodiodes. The decay time and light output of the GGAG ceramics were about 53ns and 34400±1032ph/MeV, respectively. Both properties are superior to that of commercial BGO single crystals.
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