Theory for the Rydberg states of helium: Comparison with experiment for the $1s24p{}^1{P}_1$ state ($n=24$)

Aaron T. Bondy, G. W. F. Drake, Cody McLeod +3

Recent measurements of the ionization energies of the Rydberg ${}^{1}P$ states of helium for principal quantum number $n=24$ and higher present a new challenge to theoretical atomic…