Electron-electron interaction and two-center effects in projectile ionization at backward emission angles

Journal Article · Wed Apr 01 04:00:00 EST 1992 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.45.4507· OSTI ID:7286233

Wang, J; Reinhold, C O; Burgdoerfer, J ^[1]

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1. University of Tennessee, Knoxville, Tennessee 37996-1200 and Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6377 (United States)

We analyze the electron emission spectrum into backward angles for projectile ionization in 0.5-MeV/u H{sup 0} and He{sup +} on He collisions. The energy and angular distributions of the ejected electron are calculated taking into account both scattering correlations and two-center effects. Two-center effects are treated using the continuum-distorted-wave approximation and the classical-trajectory Monte Carlo method. Correlation effects are described in terms of a Born series including contributions up to second order. Both contributions are found to enhance significantly the electron-loss cross section in near-symmetric projectile-target collision systems. We find improved agreement with experiment for He{sup +} on He collisions. Extensions to heavier targets are also discussed.

• DOE Contract Number: AC05-84OR21400
• OSTI ID: 7286233
• Journal Information: Physical Review A. General Physics; (United States), Journal Name: Physical Review A. General Physics; (United States) Vol. 45:7; ISSN 1050-2947; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

664300* -- Atomic & Molecular Physics-- Collision Phenomena-- (1992-)
74 ATOMIC AND MOLECULAR PHYSICS
ANGULAR DISTRIBUTION
ATOM COLLISIONS
ATOM-ATOM COLLISIONS
BACKSCATTERING
CHARGED PARTICLES
COLLISIONS
DISTRIBUTION
ELECTRON EMISSION
ELECTRON SPECTRA
ELECTRON-ELECTRON INTERACTIONS
ELEMENTS
EMISSION
ENERGY RANGE
ENERGY SPECTRA
FLUIDS
GASES
HELIUM
HELIUM IONS
HYDROGEN
INTERACTIONS
ION COLLISIONS
ION-ATOM COLLISIONS
IONIZATION
IONS
KEV RANGE
KEV RANGE 100-1000
LEPTON-LEPTON INTERACTIONS
NONMETALS
PARTICLE INTERACTIONS
PROJECTILES
RARE GASES
SCATTERING
SPECTRA