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An ab initio calculation of quasimolecular x-rays in slow - Ar collisions

The emission probability of quasimolecular x-rays in - Ar collisions is calculated in first order with respect to the interaction with the radiation field. For the calculation of the dynamic electronic wavefunction on the level of time-dependent Dirac - Fock - Slater a basis of many-electron two-centre Dirac - Fock - Slater wavefunctions is used and radial as well as rotational couplings are included. The calculated spectra as functions of impact parameter and energy are in good agreement with the experimental data.