Choice of the Wave Function for the Helium Ground State for Precision Calculations of Quasistationary State Parameters

V. M. Simulik; T. M. Zajac; R. V. Tymchyk

doi:10.15407/ujpe61.11.0950

Choice of the Wave Function for the Helium Ground State for Precision Calculations of Quasistationary State Parameters

Authors

V. M. Simulik Institute of Electron Physics, Department of the Theory of Elementary Interactions, Nat. Acad. of Sci. of Ukraine
T. M. Zajac Uzhgorod National University, Chair of Electron Systems
R. V. Tymchyk Institute of Electron Physics, Department of Electron Processes, Nat. Acad. of Sci. of Ukraine

DOI:

https://doi.org/10.15407/ujpe61.11.0950

Keywords:

autoionizing states, quasistationary states, overlapping configurations, multi-parametric wave functions

Abstract

In the problems of ionization of atoms by photons and electrons, the necessity of choosing the multiparametric wave functions for the description of an atom in the ground state has been substantiated. The helium atom is taken as an example. The energies, widths, and partial widths of the lowest 1P autoionizing state of helium, located above the excited ions formation threshold, are calculated. The results obtained with the use of different ground state wave functions are compared. It is shown that, contrary to the total widths of autoionizing states, the partial widths are substantially different for different ground-state wave functions.

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Published

2019-01-04

How to Cite

Simulik, V. M., Zajac, T. M., & Tymchyk, R. V. (2019). Choice of the Wave Function for the Helium Ground State for Precision Calculations of Quasistationary State Parameters. Ukrainian Journal of Physics, 61(11), 950. https://doi.org/10.15407/ujpe61.11.0950

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Issue

Vol. 61 No. 11 (2016)

Section

Atoms and molecules

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