Abstract
The role of the interionic and intraionic Auger transitions as crossluminescence killers in CsBr crystals is studied by Monte Carlo simulation procedure. It is shown that to undestand the essential features of the crossluminescence excitation spectrum near its threshold it is necessary to suppose for holes in the uppermost cation band the validity of the inequality τr ≫ τp > τa, τr being the time of their radiative relaxation (i.e. the crossluminescence decay time), τp, the time of their relaxation by scattering on phonons, and τa, the time of their intrrionic Auger relaxation, and the strong influence on τp and τa of the spin-orbit splitting of the valence and the cation bands. At higher photon energys, where the inner cation shells are ionized, the crossluminescence is partially killed by multiple Auger ionization of cation valence shell.
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