Scintillation Properties of SrCl2(Eu) Crystals

The scintillation properties of SrCl2(Eu) single crystals with Eu2+ concentrations between 0.1 and 1.0 mol% are presented. These crystals were grown by using the Czochralski method. The emission spectrum of the SrCl2(Eu) crystal was observed in the range of 390 450 nm, which matches with a bialkali PMT. The scintillation properties were studied using various gamma ray sources and an alpha source. The decay time of the pure SrCl2 crystal was about 1 μs and increased with the Eu2+ concentration. The number of photoelectrons for SrCl2(Eu:0.5 %) is 1.7 times higher than that for CsI(T`) even with a green-extended PMT being used for light collection. The details of the crystal growth, the scintillator properties, and the variations of those properties with different Eu2+ concentrations are also presented. KCI Citation Count: 14