The fine-structure effect for electron impact excitation of n3P0,1,2states of LS-coupled atoms: II. The Mg atom
- 14 November 1987
- journal article
- Published by IOP Publishing in Journal of Physics B: Atomic and Molecular Physics
- Vol. 20 (21) , L717-L722
- https://doi.org/10.1088/0022-3700/20/21/009
Abstract
For pt.I., see ibid., vol.20, p.L49 (1987). First-order many-body theory (FOMBT) is used to predict the differential cross section (DCS) and electron spin polarisation function Sp(k, k') associated with electron impact excitation of the 33P levels of the Mg atom, for incident electron energies of 10, 20 and 40 eV. The theoretical DCS agrees well with the measured DCS except at large scattering angles. By performing calculations with both single- and two-configuration representations of the Mg ground state it has been determined that configuration mixing is not very important in describing the electron scattering characteristics of the Mg atom. A comparison between comparable results for He, Mg and Hg appears to support the premise that the structure present in the electron spin polarisation function (and hence (Lperpendicular to )) is due to interference among partial waves associated with the electron scattering process.Keywords
This publication has 23 references indexed in Scilit:
- Inelastic electron scattering from mercury atoms at intermediate energies (8-50 eV)Journal of Physics B: Atomic and Molecular Physics, 1987
- Asymmetry of polarised electrons scattered inelastically from mercury atomsJournal of Physics B: Atomic and Molecular Physics, 1987
- The fine-structure effect for electron impact excitation of n3P0,1,2states of LS-coupled atoms. I. HeliumJournal of Physics B: Atomic and Molecular Physics, 1987
- Electron-photon coincidence parameters for the excitation of the n3P (n=2-8) states of heliumJournal of Physics B: Atomic and Molecular Physics, 1986
- Spin polarisation and scattering asymmetry for electron impact excitation of the (6s6p) states of mercury: DWBA treatmentJournal of Physics B: Atomic and Molecular Physics, 1985
- Shape and dynamics of states excited in electron-atom collisions: a comment on orientation and alignment parameters by consideration of attractive and repulsive forcesJournal of Physics B: Atomic and Molecular Physics, 1984
- Electron spin polarisation by inelastic scattering from mercury atomsJournal of Physics B: Atomic and Molecular Physics, 1982
- Resonance Features and Fine-Structure Effect in the Asymmetry of Polarized Electrons Scattered Inelastically from Mercury AtomsPhysical Review Letters, 1981
- Absorption spectrum of the laser-populated3D metastable levels in bariumJournal of Physics B: Atomic and Molecular Physics, 1975
- Photoionization from the Selectively ExcitedState to theAutoionization Level of Mg iPhysical Review Letters, 1973