Journal article
Electron-impact helium double excitation within the S-wave model
Journal of Physics B: Atomic, Molecular and Optical Physics, Vol.37(18), pp.3711-3721
2004
Abstract
The Laguerre-based convergent close coupling method is used to calculate the electron-impact excitation cross sections of the auto-ionizing states 2s2s1S, 2s3s1S and 2s3s3S, various ionization, as well as other cross sections for scattering from the 11S, 2 1S and 23S initial states of helium. The calculations are done within the S-wave model. Unlike the case of bound-state excitation, convergence studies need to take into account occasional mixing between the core manifolds which can severely affect the structure of the auto-ionizing states and those corresponding to ionization with excitation. A method to take this into account is given and it is shown that convergent results may be obtained, Comparison with the 'Z = 2' time-dependent calculations of Pindzola et al (1999 Phys. Rev. A 59 4390-8) is satisfactory.
Details
- Title
- Electron-impact helium double excitation within the S-wave model
- Authors/Creators
- C. Plottke (Author/Creator)P. Nicol (Author/Creator)I. Bray (Author/Creator)D.V. Fursa (Author/Creator)A.T. Stelbovics (Author/Creator)
- Publication Details
- Journal of Physics B: Atomic, Molecular and Optical Physics, Vol.37(18), pp.3711-3721
- Publisher
- Institute of Physics
- Identifiers
- 991005542845807891
- Murdoch Affiliation
- Centre for Atomic, Molecular and Surface Physics
- Language
- English
- Resource Type
- Journal article
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- Citation topics
- 2 Chemistry
- 2.15 Physical Chemistry
- 2.15.664 Dissociative Electron Attachment
- Web Of Science research areas
- Optics
- Physics, Atomic, Molecular & Chemical
- ESI research areas
- Physics