A uniform quantum energy approach for studying spectra of the multicharged ions in a plasmas and the electron-ion collision cross sections is presented. The approach is based on formally exact QED theory by using the relativistic Dirac Hamiltonian for electron-nuclear and electron-electron potentials, the gauge invariant scheme of generation for the optimal one-quasiparticle representation and the Debye shielding model. The measured and calculated electron-collisional excitation cross sections for Ne-like barium ion for different values of the incident electron energy are presented and analyzed.

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The hyperfine structure parameters, scalar-pseudoscalar interaction constants and parity non-conservation effect in some heavy atomic systems are calculated and treated within the combined QED perturbation theory formalism and relativistic nuclear mean-field theory.

SENSING THE AUGER SPECTRA FOR SOLIDS: NEW QUANTUM APPROACH S. V. Ambrosov, A. V. Glushkov, L. V. NikolaIt is proposed new approach to sensing Auger spectra of solids and calculation of charac-teristics of Auger decay within S-matrix Gell-Mann and Low formalism. The energies of Auger electron transitions in solids (Na,Si,Ge,Ag) are calculated with account for correlation effects.

The combined relativistic energy approach and relativistic many-body perturbation theory with the zeroth order density functional approximation is applied to determination of the energy and spectral parameters of the resonant Auger decay for neon atomic system. The results are compared with reported experimental results as well as with those obtained by semiempirical and ab initio Hartree-Fock methods. The important point is linked with an accurate accounting for the complex exchange-correlation (polarization) effect contributions and using the optimized onequasiparticle representation in the relativistic many-body perturbation theory zeroth order that significantly provides a physically reasonable agreement between theory and experiment.