State-to-state cross sections in collisions

In continuation of recently published total capture cross sections for electron transfer from Na(3s) and Na(3p) initial states, we report detailed partial cross sections from coupled-channel calculations using a one-electron model for the collision system. Results are presented for Na(3p) excitation and for capture into various subshells of He where some experimental results are available. We shall focus, in particular, on state-to-state integral cross sections for electron transfer from aligned or oriented Na(3p) states into aligned and oriented states where experimental results may become available. We predict significant alignment and orientation anisotropies in the energy range in singlet as well as triplet channels. We show that previous deviations between experiment and theory in estimating the alignment anisotropy parameter for total capture may be related to the omission of the states in the capture channels.