Calculations for electron-impact ionization of beryllium in the method of interacting configurations in the complex number representation

Abstract

The beginning of the application of the method of interacting configurations in the complex number representation to the compound atomic systems has been presented. The spectroscopic characteristics of the Be atom in the problem of the electron-impact ionization of this atom are investigated. The energies and the widths of the lowest 1 S, 1 P, 1 D, and 1 F autoionizing states of Be atom are calculated.

Calculations for electron-impact ionization of magnesium and calcium atoms in the method of interacting configurations in the complex number representation

“…Here the electron-impact ionizations of the Mg, Ca atoms in the interval of AIS excitation are considered. The corresponding results [1,2] for beryllium atom are discussed briefly as well. Furthermore, some results for helium-like Be ++ ion are given.…”

“…In articles [1,2] energies and widths of the lowest AIS ( 1 S, 1 P, 1 D, and 1 F ) of a beryllium atom has been presented. These resonances were obtained in the ICCNR approximation in the problem of the electron-impact ionization of an atom.…”

“…We presented here next step in our last years program to apply the method of interacting configurations in the complex number representation (the ICCNR method) to the complex atoms description. The previous step was considered in [1,2], where this method on the example of beryllium atom has been demonstrated.…”