Bethe logarithm for the helium atom accuracy for the S,
P, and D states of the helium atom. © 2019 American Physical Society.
Nonrelativistic energy levels of helium atomsThe nonrelativistic ionization energy levels of a helium atom are calculated for S,
P, D, and F
Nonrelativistic energy levels of helium atomThe nonrelativistic energy levels of a helium atom are calculated for S,
P, D and F states