| Numéro |
J. Phys. Colloques
Volume 50, Numéro C1, Janvier 1989
International Conference on the Physics of Multiply Charged Ions and International Workshop on E.C.R. Ion Sources
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|---|---|---|
| Page(s) | C1-399 - C1-403 | |
| DOI | https://doi.org/10.1051/jphyscol:1989147 | |
International Conference on the Physics of Multiply Charged Ions and International Workshop on E.C.R. Ion Sources
J. Phys. Colloques 50 (1989) C1-399-C1-403
DOI: 10.1051/jphyscol:1989147
Institut für Experimentalphysik AG II, Ruhr-Universität, D-4630 Bochum, F.R.G.
J. Phys. Colloques 50 (1989) C1-399-C1-403
DOI: 10.1051/jphyscol:1989147
THRESHOLD IONISATION BY ELECTRON IMPACT
H. LEBIUS, B.A. HUBER, H.R. KOSLOWSKI and K. WIESEMANNInstitut für Experimentalphysik AG II, Ruhr-Universität, D-4630 Bochum, F.R.G.
Abstract
Multiple ionisation of rare gas atoms by electron impact has been studied experimentally close to the ionisation thresholds. In this energy range the cross sections are described by threshold laws, yielding resonable agreement with theory for He and Ne. In the heavier targets the exponent value is found to be smaller than predicted and the results can be interpreted in terms of a pure statistical theory.