Photon Interaction and Electron Nonproportional Response of CLYC Scintillation Material

Abstract In this study, the photon interaction and the electron nonproportional response of Cs2LiYCl6:Ce (CLYC) scintillation were studied. The radioactive source of 137Cs that irradiated gamma rays with an energy of 662 keV were used in this experiment. For photon interaction, the mass attenuation coefficient ( μ / ρ ), the effective atomic number ( Z e f f ) and the electron density ( N e l ) were measured with eight different gamma ray energies using Compton scattering technique. For nonproportional response, the coincidence electron energy spectra were recorded at seven scattering angles of 30°–120° using Compton coincidence technique. The values of μ / ρ , Z e f f and N e l show decrease with the increasing of gamma ray energies. The nonproportional show that the CLYC demonstrated good proportional property all in the electron energy range of 99.24–450.59 keV.