Optical and Scintillation properties of Cs 2 LiYCl 6 : Ce 3 + and Cs 2 LiYCl 6 : Pr 3 + Crystals

In this paper we report on the optical and scintillation properties of Cs2LiYCl6:Ce and Cs2LiYCl6:Pr crystals. Crystals of Cs2LiYCl6 doped with different Ce and Pr concentrations were grown and studied under optical, X-ray, gamma ray, and thermal neutron excitation. These scintillators exhibit core-valence and self-trapped exciton luminescence in addition to fast emission from Ce and Pr. Efficient thermal neutron detection was observed for both scintillators. The position of the neutron peak in its pulse height spectrum was found at about 5 times the channel number of the position of the gamma peak.