The nonrelativistic ionization energy levels of a helium atom are calculated for S, P, D, and F states. The
calculations are based on the variational method of “exponential” expansion. The convergence of the calculated
energy levels is studied as a function of the number of basis functions N. This allows us to claim that the obtained
energy values (including the values for the states with a nonzero angular momentum) are accurate up to 28–35
significant digits.
Volume 353 -
International Conference on Precision Physics and Fundamental Physical Constants (FFK2019) -
Poster session
Nonrelativistic energy levels of the helium atom
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Pre-published on:
October 15, 2019
Published on:
February 18, 2020
Abstract
DOI: https://doi.org/10.22323/1.353.0060
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.