Absolute doubly differential cross sections for electron emission in collisions of 3. 5-MeV/u Fe sup 17+ and Fe sup 22+ ions with He and Ar gas targets

Absolute doubly differential cross sections have been measured as a function of electron energy and angle of observation for electron emission in collisions of 3.5-MeV/u Fe{sup 17+} and Fe{sup 22+} ions with He and Ar gas targets under single-collision conditions. The measured electron emission cros...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 1992-08, Vol.46:3
Main Authors: Schneider, D.H., DeWitt, D.R., Bauer, R.W., Mowat, J.R., Graham, W.G., Schlachter, A.S., Skogvall, B., Fainstein, P., Rivarola, R.D.
Format: Article
Language:English
Subjects:
664300 - Atomic & Molecular Physics- Collision Phenomena- (1992-)
ARGON
ATOM COLLISIONS
ATOMIC AND MOLECULAR PHYSICS
CHARGED PARTICLES
COLLISIONS
CROSS SECTIONS
DIFFERENTIAL CROSS SECTIONS
ELECTRON EMISSION
ELECTRON LOSS
ELEMENTS
EMISSION
ENERGY DEPENDENCE
ENERGY RANGE
FLUIDS
GASES
HELIUM
ION COLLISIONS
ION-ATOM COLLISIONS
IONS
IRON IONS
MEV RANGE
MULTICHARGED IONS
NONMETALS
RARE GASES
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Summary:Absolute doubly differential cross sections have been measured as a function of electron energy and angle of observation for electron emission in collisions of 3.5-MeV/u Fe{sup 17+} and Fe{sup 22+} ions with He and Ar gas targets under single-collision conditions. The measured electron emission cross sections are compared to theoretical and scaled cross sections based on the Born approximation. The results using intermediate-mass ions are discussed with reference to previously reported cross sections from collisions with highly charged lighter- and heavier-ion species at MeV/u projectile energies. The continuum--distorted-wave--eikonal-initial-state approximation shows good agreement with experiments except in the binary-encounter peak'' where the interaction between projectile electrons and target electrons could play an important role.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.46.1296