Angular distribution of photoelectrons in two-step photoionization_influence of the hyperfine structure (A)
von Thomas, Hellmuth
Leuchs, G.; Hellmuth, T.; Smith, S. J.; Walther, H.; (1980), Angular distribution of photoelectrons in two-step photoionization_influence of the hyperfine structure (A), J. Opt. Soc. Am., vol. 70, page 617