Analysis of molecular autoionization electron spectra (in He+He collisions)
- 11 January 1976
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 9 (1), 123-136
- https://doi.org/10.1088/0022-3700/9/1/013
Abstract
Electron spectra arising from He-He collisions at low kinetic energies are analysed. Improved measurements of the high electron energy part (15-20 eV) of the spectra, and new measurements of the low energy part (0-10 eV) are used. The observed structures are explained either by Penning ionization in the exit channel or by decay of negative He*- ions in the Coulomb field of the collision partner He+ (1s). New theoretical approximate formulae for the analysis of structures of the former type are derived, and shown to be valid by comparison with experiment. Analysis of structures of the latter type is performed using a known formula and yields energy positions and lifetimes of the He*- resonances involved.Keywords
This publication has 12 references indexed in Scilit:
- Observation of Two-Electron Penning Ionization in a Thermal-Energy CollisionPhysical Review Letters, 1973
- Resonances in Electron Impact on AtomsReviews of Modern Physics, 1973
- Ionization processes in He-He collisionsJournal of Physics B: Atomic and Molecular Physics, 1973
- Ionization processes in slow collisions of heavy particles II. Symmetrical systems of the rare gases He, Ne, Ar, KrJournal of Physics B: Atomic and Molecular Physics, 1973
- Dissociation Energies of andPhysical Review Letters, 1971
- Low-Energy Scattering of Electrons by HeliumPhysical Review B, 1969
- Kurzlebige Compoundzustände in der niederenergetischen Elektron-Helium-StreuungThe European Physical Journal A, 1968
- Electron Energy Distributions from Ionizing Collisions of Helium and Neon Ions with HeliumPhysical Review B, 1966
- Unified theory of nuclear reactionsAnnals of Physics, 1958
- Beweis des AdiabatensatzesThe European Physical Journal A, 1928