Initial-state selective study of ionization dynamics in ion-Li collisions

Abstract

Kinematically complete experiments were performed on the ionization of a laser-cooled lithium target from different initial states, Li(2s), Li(2p) and Li(1s), by 6 MeV H+ and 1.5 MeV amu−1 O8 + impact. In the measured doubly differential cross sections as a function of electron energy and transverse momentum transfer, a significant initial state dependence is found. Furthermore, comparison to quantum mechanical theory shows surprising discrepancies for Li(2s) and Li(1s) while there is good agreement for the Li(2p) initial state.

Differential cross sections for single ionization of Li in collisions with fast protons andO8+ions

“…This has also been noted in [13,15]. We have also evaluated (1) - (3) also show results of CDW-EIS calculations by LaForge et al [13]. Their results are almost the same as the present ones for all E e 's when the shapes of the curves are considered.…”

“…This has also been noted in [13,15]. We have also evaluated (1) - (3) also show results of CDW-EIS calculations by LaForge et al [13].…”

“…We thank Eberhard Engel for making his atomic structure calculations available to us and Daniel Fischer for discussions on the data of Ref. [13]. (7) with dashed red and of (8) with dot-dot-dashed green lines.…”

“…(7) with dashed red and of (8) with dot-dot-dashed green lines. • experimental data from [13] as renormalized recently [32]. [15] and [14], (results from [14] are normalised to the present data at η=0.65 a.u.…”

Electron and recoil ion momentum imaging with a magneto-optically trapped target

“…The MOTReMi setup described in this paper was developed for experiments at an ion storage ring, the test storage ring TSR at the Max Planck Institute for nuclear physics in Heidelberg 26,27 , in order to study ion-atom collision dynamics 28,29 . The combination of a reaction microscope and a MOT as well as its operation in an ion storage ring, requires a novel design of each of the individual components.…”