The recent efforts made in the theoretical description of the anisotropy of the charge cloud of the L3 subshell induced by heavy ions in heavy atoms are reviewed. For L-shell ionization processes the strong dynamical couplings among the substates represent a serious challenge to the theory. This is exemplified by results of L3-subshell alignment calculations made in the first- and second-order Born approximation, as well as in a coupled-states scheme. The application of the perturbative variational method is briefly discussed as a possible way of future development in treatment of the collisional alignment.
ASJC Scopus subject areas
- Nuclear and High Energy Physics