Two-center electron emission in collisions of fast, highly charged ions with He: Experiment and theory

Journal Article · Wed Nov 01 04:00:00 EST 1995 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.52.3796· OSTI ID:132897

Stolterfoht, N; Platten, H; Schiwietz, G; Schneider, D ^[1]; Gulyas, L ^[2]; Fainstein, P D ^[3]; Salin, A ^[4]

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1. Hahn-Meitner-Institut Berlin GmbH, Bereich Festkoerperphysik, Glienickerstrasse 100, D-14109 Berlin (Germany)
2. Institute of Nuclear Research of the Hungarian Academy of Science (ATOMKI), P.O. Box 51, H-4001 Debreccen (Hungary)
3. Laboratoire de Chemie-Physique Matiere et Rayonnemnent, Universite Pierre et Marie Curie, 11 Rue Pierre et Marie Curie, 75231 Paris (France)
4. Laboratoire des Collisions Atomiques, CNRS and Universite de Bordeaux, I, 351 Cours de la Liberation, F-33405 Talence (France)

Electron emission cross sections differential in energy and angle of the ejected electrons were measured in collisions of 5-MeV/{ital u} C{sup 6+}, O{sup 8+}, and Ne{sup 10+} ions on He. The experimental results deviate substantially from calculations based on the plane-wave Born approximation indicating that the ejected electrons are significantly affected by the two-center field of the target and projectile ion. The two-center effects were confirmed by comparison with results from the continuum-distorted-wave--eikonal-initial-state (CDW-EIS) approximation that has recently been improved by using Hartree-Fock-Slater wave functions for the ejected electrons. It is shown for nearly complete energy and angular ranges that the improved CDW-EIS method predicts cross sections in excellent agreement with experiment.

• OSTI ID: 132897
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 5 Vol. 52; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BORN APPROXIMATION
CARBON IONS
CROSS SECTIONS
ELECTRON EMISSION
HELIUM
ION-ATOM COLLISIONS
MEV RANGE 01-10
NEON IONS
OXYGEN IONS