Crystal Growth and Scintillation Properties of Rb CeBr

In this paper, crystal growth and scintillation prop- erties of Rb CeBr crystal are presented. The crystal was grown with the Bridgman method using a two zone transparent furnace. The investigation of scintillation properties of the crystal were per- formed under the excitation by X-ray and ;-ray at room temper- ature. The emission spectrum of the Rb CeBr was observed in the range of nm, peaking at 390.5 nm, which is due to the transitions of the Ce . The decay time of the Ce emission was composed two components. The fast component was 56.1 ns (98.8%), and the slow component was 329.9 ns (1.2%). The energy resolution of the crystal was obtained to be 6.9% for the Cs 662 keV -ray. The absolute light yield of the Rb CeBr crystal is about 34,000 phs/MeV, and the non-proportionality of the crystal was also measured.