Recoil ion charge state distributions in low energy Ar(sup q+) (minus) Ar collisions.

摘要

We have measured the recoil ion charge state distributions in Ar(sup q+) -- Ar (8(le)q(le)16) collisions at 2.3 qkeV and 0.18qkeV by time of flight (TOF) spectroscopy. For Ar(sup 8-16+), recoil ion charge states up to 6+ are clearly present, indicating that the 3p subshell in the target atom is being depleted, while for Ar(sup 10-16+), there is evidence that target 3s electrons are also being removed. Comparison of the recoil ion charge state spectra at 2.3 and 0.18 qkeV shows that for a given projectile charge, there is very little dependence of the observed recoil target charge state distribution on projectile energy.