Saddle-point electrons in ionizing ion-atom collisions

Journal Article · Mon Jul 06 04:00:00 EDT 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.59.36· OSTI ID:6265588

Olson, R E; Gay, T J; Berry, H G; Hale, E B; Irby, V D

We have studied H/sup +/+He ionizing collisions, and find that electrons stranded between the two postcollision Coulomb centers dominate the ejected-electron spectra for intermediate (--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.

• Research Organization: Laboratory for Atomic and Molecular Research and Physics Department, University of MissouriRolla, Rolla, Missouri 65401
• OSTI ID: 6265588
• Journal Information: Phys. Rev. Lett.; (United States), Journal Name: Phys. Rev. Lett.; (United States) Vol. 59:1; ISSN PRLTA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
CATIONS
CHARGED PARTICLES
COLLISIONS
DATA
ELECTRON EMISSION
ELEMENTS
EMISSION
ENERGY RANGE
EXPERIMENTAL DATA
FLUIDS
GASES
HELIUM
HYDROGEN IONS
HYDROGEN IONS 1 PLUS
INFORMATION
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
KEV RANGE
KEV RANGE 10-100
NONMETALS
NUMERICAL DATA
RARE GASES
SADDLE-POINT METHOD