Elastic and inelastic processes in He+-H collisions in the keV energy range
- 21 February 1976
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 9 (3) , 461-471
- https://doi.org/10.1088/0022-3700/9/3/015
Abstract
An experimental and theoretical investigation of the He+-H collision is performed. Identification of the elastic process and direct excitation of the H atom is obtained by measuring the characteristic energy losses undergone by the scattered He+ whereas time-of-flight (TOF) technique is used to study the electron capture processes. Differential cross sections are measured in the 750-2500 eV energy range. The interpretation makes use of a simple independent electron model. All excitation processes are seen to be induced by a common primary 2p sigma -2p pi rotational coupling. The sharing of the excitation between H(2p) and He(1s2p) is induced by a long-range coupling. Using this model and previously calculated potentials, the differential and total cross sections are calculated with a semiclassical method. In particular structures in the total cross sections are discussed. A reasonable agreement is found between theory and experiment.Keywords
This publication has 21 references indexed in Scilit:
- Direct and exchange processes in ion-atom collisions. I. He+-HeJournal of Physics B: Atomic and Molecular Physics, 1975
- Common trajectory methods for the calculation of differential cross sections for inelastic transitions in atom(ion)-atom collisions. I. General theoryJournal of Physics B: Atomic and Molecular Physics, 1975
- Common trajectory methods for the calculation of differential cross sections for inelastic transitions in atom(ion)-atom collisions. II. Application to proton-hydrogen scatteringJournal of Physics B: Atomic and Molecular Physics, 1975
- Configuration interaction studies of the HeH+ molecular ion. I Singlet sigma statesThe Journal of Chemical Physics, 1974
- Configuration interaction studies of HeH+ molecular ion. II Dipole and radial coupling matrix elements for the singlet sigma statesThe Journal of Chemical Physics, 1974
- Model potential calculations on open-shell moleculesJournal of Physics B: Atomic and Molecular Physics, 1973
- Differential measurements on ion-atom collisions in the energy range 500-3000 eV. IV. H+-noble gas atom collisionsJournal of Physics B: Atomic and Molecular Physics, 1972
- Charge Transfer to theState of Hydrogen from Close Collisions ofwith He and ArPhysical Review A, 1971
- Electronic Eigenenergies of the Hydrogen Molecular IonPublished by Elsevier ,1968
- Exact wave functions of HeH 2+Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1956