Optical and scintillation properties of lutetium vanadate single crystal

We studied optical- and scintillation properties of LuVO₄ single crystal grown by the Czochralski (CZ) method with RF heating system. The vanadate crystal show high transmittance (~ 80 %) in the 400-900 nm wavelength range. In both of photo- and radio-luminescence spectra, intense peak around 400-500 nm which was ascribed to the transition from triplet state of VO₄^3- was clearly observed. The main decay time component was about 17 μs under 340 nm excitation. The scintillation light yield of LuVO₄ single crystals were evaluated to be about 10300 ph/MeV from the ¹³⁷Cs excited pulse height spectra, respectively.