![The validity of classical trajectory and perturbative quantal methods for electron-impact ionization from excited states in H-like ions]()
The validity of classical trajectory and perturbative quantal methods for electron-impact ionization from excited states in H-like ionsGriffin, D C; Ballance, C P; Pindzola, M S; Robicheaux, F; Loch, S D; Ludlow, J A; Witthoeft, M C; Colgan, J; Fontes, C J; Schultz, D R · Journal of Physics B: Atomic, Molecular and Optical Physics · 2005