Abstract
Based on a Multi-configuration Dirac-Fock method, a systematic study has been carried out for the decay processes of the inner-shell excited state 1s2s22S1,2of Li-like ions. It is found that only the Auger decay channel is dominant for the low Z ions, the two-electron one-photon radiative decay caused by a strong electron correlation becomes a competitive channel for the middle and high Z ions, whereas the magnetic quadruple radiative decay is also an important decay channel for the very heavy ions. At the same time, it is noticed that the Breit interaction can give a very important contribution to the Auger decay rate of the heavy ions.
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