Saddle-point electrons in ionizing ion-atom collisions
R. E. OlsonLaboratory for Atomic & Molecular Research and Physics Department, University of MissouriRolla, Rolla, Missouri 65401T. J. GayLaboratory for Atomic & Molecular Research and Physics Department, University of MissouriRolla, Rolla, Missouri 65401H. G. BerryLaboratory for Atomic & Molecular Research and Physics Department, University of MissouriRolla, Rolla, Missouri 65401Edward B. HaleLaboratory for Atomic & Molecular Research and Physics Department, University of MissouriRolla, Rolla, Missouri 65401V. D. IrbyLaboratory for Atomic & Molecular Research and Physics Department, University of MissouriRolla, Rolla, Missouri 65401
1987en
ABI
Аннотация
We have studied ${\mathrm{H}}^{+}$+He ionizing collisions, and find that electrons stranded between the two postcollision Coulomb centers dominate the ejected-electron spectra for intermediate (\ensuremath{\sim}100 keV) projectile energies. The importance of these electrons is clearly established by our classical calculations which are in qualitative agreement, in both shape and magnitude, with experimental spectra taken by us, and with earlier measurements. These ``saddle-point'' electrons are produced by a classically understandable mechanism, and are unambiguously observed at nonzero scattering angles.
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