title: Multiple ionization in fast ion-atom collisions: simultaneous measurement of recoil momentum and projectile energy loss
abstract: We report on the first experiment that measures simultaneously the full momentum vector of recoil ions and projectile energy loss and scattering angle in ion-atom collisions. We studied multiple ionization in the collisions of 0.83-MeV/u O7+ with Ne. Recoil ions ( Ne(q+), q = 1-8) were detected in coincidence with single capture to O6+. The results give the first experimental evidence for the increase of the average electron energy with increasing recoil charge state q. The average ejection angle shows a dramatic decrease with q. Results are compared with n-electron classical trajectory Monte Carlo calculations.
authors.affiliation: Physics Division, Oak Ridge National Laboratory, Building 5500, P.O. Box 2008, Oak Ridge, Tennessee 37831-6377, USA.
authors.initials: MA
authors.lastname: Abdallah
authors.initials: CR
authors.lastname: Vane
authors.initials: CC
authors.lastname: Havener
authors.initials: DR
authors.lastname: Schultz
authors.initials: HF
authors.lastname: Krause
authors.initials: N
authors.lastname: Jones
authors.initials: S
authors.lastname: Datz