Electron loss from H(2s), H(1s), He(11S), He(23S), Li(22S), H-and He-projectiles passing through the inert gases-the free-collision model
- 14 December 1978
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 11 (23) , 3983-3407
- https://doi.org/10.1088/0022-3700/11/23/011
Abstract
Electron-loss cross sections are calculated in the free-collision model (FCM) for the energy range 14 keV/amu to 105 keV/amu. Care is taken to use accurate electron-target scattering cross sections, the basic input to the FCM. To get some indication of the inherent accuracy of the free-collision assumption comparison is made with exact results in a first Born model problem. Also investigated is the efficacy of the closure approximation for those loss processes involving excitation of the target. While He(23S) and Li(22S) may be regarded as containing only one 'active' electron, the 2s electron, at low impact energies, calculation shows that the tightly bound 1s electron make very substantial contributions at high energies. In the case of many-electron projectiles, cross sections for electron loss leading to particular final electronic states of the ionised projectile are given.Keywords
This publication has 79 references indexed in Scilit:
- Collisional electron detachment from hydrogen atoms between 22 and 45 MeVLettere al Nuovo Cimento (1971-1985), 1974
- Electron loss from fast metastable hydrogen atoms passing through atomic hydrogen and heliumJournal of Physics B: Atomic and Molecular Physics, 1971
- Classical treatment of electron lossJournal of Physics B: Atomic and Molecular Physics, 1969
- First Born approximation cross sections for electron loss from fast hydrogen atoms passing through atomic helium and fast helium atoms passing through atomic hydrogen and heliumJournal of Physics B: Atomic and Molecular Physics, 1969
- A classical impulse approximation treatment of collisional detachment from H-ionsProceedings of the Physical Society, 1967
- Quenching of auroral hydrogen line emission by collisional ionizationPlanetary and Space Science, 1966
- Experiments on Charge-Changing Collisions of Lithium Ionic and Atomic BeamsPhysical Review B, 1960
- Charge Exchange Cross Sections of Hydrogen Particles in Gases at High EnergiesPhysical Review B, 1958
- Charge Exchange Cross Sections for Helium Ions in GasesPhysical Review B, 1958
- Inelastic Collisions between Heavy Particles IV: Contribution of Double Transitions to certain Cross Sections including that associated with the Ionization of Hydrogen Atoms in Fast Encounters with other Hydrogen AtomsProceedings of the Physical Society. Section A, 1955