CHARGE AND ENERGY EXCHANGE BETWEEN A METAL AND A 2-LEVEL PARTICLE IN A METASTABLE STATE

The interaction with a metal of a two-level particle having two electr ons in the triplet configuration has been studied using a time-depende nt Newns-Anderson Hamiltonian under the assumption that the intra-atom ic Coulomb repulsion terms are large compared to the matrix elements o f the metal-particle interaction potential. Using perturbation theory explicit expressions of the transitions amplitudes for the processing occurring to second order in the interaction potential have been deriv ed, thus allowing for the calculation of the spectral function up to f ourth order. Results for a model system are presented that emphasize t he importance of correlation terms in the various processes.