MULTIPLE IONIZATION COLLISION DYNAMICS IN 10-MEV F6+ ON NE COLLISIONS

Recoil-ion momentum distributions, measured in coincidence with the final projectile momentum transverse to the beam direction, have been investigated in order to obtain information on the sum momentum of the ejected electrons for the multiple ionization and capture reaction: 0.53 MeV u-1 F6+ + Ne --> F5+ + Ne(q+) + (q - 1)e-. For close collisions, at projectile polar scattering angles between 0.1 less-than-or-equal-to curly-theta less-than-or-equal-to 1 mrad, the many-particle momentum exchange (emitted electrons, projectile and target recoil ion) was found to be strongly dominated by the momentum transfer between the nuclei for Ne final charge states q = 5 and 6. In accordance with theoretical results in the nCTMC and the semiclassical quantum statistical (ionization channel) approaches, the projectile azimuthal and polar scattering is to a large extent compensated by the transverse momentum transfer to the recoil ion. No 'out-of-plane' scattering, in the sense as reported for the double capture plus multiple ionization channel in 0.53 MeV u-1 F8+ on Ne collisions by Gonzales et al, was observed for any of the final recoil-ion charge states.