MODEL FOR PRESTABILIZED ELECTRON RELAXATION

A model for electron trap relaxation in glassy polar matrices is proposed. The relaxation process is considered as a result of two simultaneously occurring processes: molecular rotation under the influence of the field of the electron, and electron tunnelling from an occupied shallow unrelaxed trap to a slighly deeper pre-existing trap - this last process is followed by fast rotation of the trap constituting molecules on account of local heating" of the matrix. This heating is the effect of the conversion of the electronic excess energy after transfer to the deeper trap into the local molecular motions of the trap neighbourhood. Numerical calculations are performed for ethanol and 1-propanol and the results obtained are in good accordance with experimental data. The ability of the model to describe the observed relaxation phenomena is discussed. © 1979."