Crystal growth and scintillation properties of CsCaBr3:Eu2+(CsCa1−xEuxBr3, 0≤x≤0.08)

A series of CsCa1−xEuxBr3 (0≤x≤0.08) single crystals has been grown using the Bridgman–Stockbarger technique and their luminescent and scintillation properties have been studied. The radioluminescence spectra of CsCaBr3:Eu2+(with 0.5, 1.0, 3.0, 5.0 and 8.0 mol% of Eu2+) materials include a narrow band with the maximum which position is shifted from 442 to 447 nm with the increase of Eu2+ concentration in the growth melt. The maximal light yield achieves 28,000 ph/MeV at CsCa0.92Eu0.08Br3 with energy resolution of 9.3% at 662 keV.

► A new CsCa1−xEuxBr3 (0≤x≤0.08) scintillation material has been studied.
► The crystals were grown using the Bridgman–Stockbarger technique.
► All the crystals had excellent transparency.
► The maximal light yield is 28,000 ph/MeV with energy resolution of 9.3% at 662 keV.
► The main decay time constant for CsCa0.92Eu0.08Br3 is 6.097±0.002 μs.