Double ionization of helium by electron-impact: complete pictures of the four-body breakup dynamics

Date

2001-04-23

Authors

Dorn, Alexander
Kheifets, Anatoli
Schroter, C D
Najjari, B
Hohr, C
Moshammer, R
Ullrich, Joachim

Journal Title

Journal ISSN

Volume Title

Publisher

American Physical Society

Abstract

The dynamics of He double ionization by 2 keV electron impact is studied experimentally for a momentum transfer of 0.6 a.u. at excess energies of 10 and 40 eV. Complete sets of fivefold differential cross sections are presented for all electron emission angles in coplanar geometry. Contributions beyond the first Born approximation are identified comparing experimental data with first order convergent close-coupling calculations which are in considerably better agreement with the present experiment than with the earlier measurement of Kheifets et al. [J. Phys. B 32, 5047 (1999)].

Description

Keywords

Keywords: Approximation theory; Convergence of numerical methods; Electron emission; Electron transport properties; Electrons; Helium; Kinematics; Molecular dynamics; Born approximation; Electron impact; Four body breakup dynamics; Ionization

Citation

Physical Review Letters 86.17 (2001): 3755-3758

Source

Physical Review Letters

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1103/PhysRevLett.86.3755

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