Double ionization of He and Li by 95-MeV/amu N{sup 7+} impact

Journal Article · Thu Jun 01 00:00:00 EDT 1995 · Physical Review A

DOI:https://doi.org/10.1103/PhysRevA.51.R4321· OSTI ID:55104

Skogvall, B ^[1]; Chesnel, J Y; Fremont, F; Lecler, D; Husson, X; Lepoutre, A; Hennecart, D ^[2]; Grandin, J P ^[3]; Sulik, B ^[4]; Salin, A ^[5]; Stolterfoht, N ^[6]

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1. Institut fuer Strahlungs- und Kernphysik, Technische Universitaet Berlin, Hardenbergstrasse 36, D-10623 Berlin (Germany)
2. Laboratoire de Spectroscopie Atomique, Institut des Sciences de la Matiere et du Rayonnement, F-14050 Caen (France)
3. Centre Interdisciplinaire de Recherche avec les Ions Lourdes, F-14040 Caen (France)
4. Institute of Nuclear Research of the Hungarian Academy of Sciences, P.O.B. 51, H-4001 Debrecen (Hungary)
5. Laboratoire des Collisions Atomique, CNRS and Universite Bordeau I, F-33405 Talence (France)
6. Hahn-Meitner Institut, Glienicker Strasse 100, D-14109 Berlin (Germany)

The cross-section ratio for double-to-single ionization has been investigated for collisions of 95-MeV/amu N{sup 7+} with He and Li target atoms. The measured values for Li and He are equal within the experimental uncertainties. First-order perturbation theory suggests that double ionization of Li is dominated by electron-nuclear interaction, whereas double ionization of He is dominated by electron-electron interactions such as shake-off and initial-state correlation. First-order perturbation theory can describe the ratio of double to single ionization of N{sup 7+}+Li at 95 MeV/amu within the experimental uncertainties.

• OSTI ID: 55104
• Journal Information: Physical Review A, Journal Name: Physical Review A Journal Issue: 6 Vol. 51; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CROSS SECTIONS
ELECTRON-ELECTRON INTERACTIONS
HELIUM
ION-ATOM COLLISIONS
IONIZATION
LITHIUM
MEV RANGE 10-100
MULTICHARGED IONS
NITROGEN IONS
PERTURBATION THEORY