Abstract: Lu2SiO5:e crystals with dimension of φ50mm×60mm were grown by Czochralski method from an inductively heated iridium crucible. The crystal structure was examined by XRD and confirmed to be monoclinic symmetry. Its optical transmission, UV-excited, X-ray excited emission and light yield were measured at room temperature. The results show that the emission spectra exhibit doublet structure peaking at 403nm and 420nm,which can be attributed to the transition of the Ce3+ ions at Lu site from the lowest 5d level to the two 4f ground states,5d′→5F5/2 and 5d′→5F7/2.The decay time tested under gamma ray excitation is 41ns.The best light yield is 32000P/MeV.

Key words: Lu2SiO5:e crystals with dimension of φ50mm×60mm were grown by Czochralski method from an inductively heated iridium crucible. The crystal structure was examined by XRD and confirmed to be monoclinic symmetry. Its optical transmission, UV-excited, X-ray excited emission and light yield were measured at room temperature. The results show that the emission spectra exhibit doublet structure peaking at 403nm and 420nm,which can be attributed to the transition of the Ce3+ ions at Lu site from the lowest 5d level to the two 4f ground states,5d′→5F5/2 and 5d′→5F7/2.The decay time tested under gamma ray excitation is 41ns.The best light yield is 32000P/MeV.