Coulomb path'' interference in low-energy ion-atom collisions
- University of Tennessee, Knoxville, Tennessee 37996 (US)
- Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831-6372 (USA)
A new interference mechanism, analogous to classic'' double-slit electron scattering, has been identified in low-energy ion-atom collisions. This Coulomb path'' interference results from the existence of two trajectories, indistinguishable with respect to laboratory energy and emission angle, along which ejected autoionizing electrons may be scattered by the attractive Coulomb potential of the slowly receding spectator ion. A simple semiclassical description is presented. Calculated model line shapes are in excellent ageement with the strong angular dependence of the interference structure observed in the He-target 2{ital s}{sup 2} {sup 1}{ital S} autoionizing line shape measured near 0{degree} following 10-keV He{sup +}+He collisions.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5865489
- Journal Information:
- Physical Review Letters; (USA), Vol. 66:4; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ELECTRONS
TRAJECTORIES
HELIUM
ION-ATOM COLLISIONS
HELIUM IONS
AUTOIONIZATION
CATIONS
CORRELATIONS
COULOMB FIELD
EXPERIMENTAL DATA
KEV RANGE 01-10
LINE WIDTHS
SCATTERING
SEMICLASSICAL APPROXIMATION
TARGETS
ATOM COLLISIONS
CHARGED PARTICLES
COLLISIONS
DATA
ELECTRIC FIELDS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FLUIDS
GASES
INFORMATION
ION COLLISIONS
IONIZATION
IONS
KEV RANGE
LEPTONS
NONMETALS
NUMERICAL DATA
RARE GASES
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena