Target dependence of slow electrons emitted in swift ion-atom collisions -art. no. 062720

Low-energy electron emission is studied for 3.6-MeV/u AU(53+) impact on Ne and Ar using the first-Born and continuum-distorted-wave eikonal-initial-st ate (CDW-EIS) approximations. By using optimized effective potentials to re present the target atom, very good agreement is obtained between the CDW-EI S results and experiments. The comparison with the calculations using the f irst-Born approximation shows that the emission is very asymmetric, with a preferential emission into the forward direction. A detailed study of the e mission from each initial orbital of the target atom reveals features in th e spectra which can be related to the structure of the initial-state bound wave function.