Journal article

Near-threshold absolute angle-differential cross sections for electron-impact excitation of argon and xenon

  • Allan, Michael Department of Chemistry, University of Fribourg, Switzerland
  • Zatsarinny, O. Department of Physics and Astronomy, Drake University, Des Moines, Iowa, USA
  • Bartschat, K. Department of Physics and Astronomy, Drake University, Des Moines, Iowa, USA
    19.09.2006
Published in:
  • Physical Review A. - 2006, vol. 74, p. 030701
English Absolute angle-differential cross sections for electron-impact excitation of argon and xenon atoms to the lowest four np⁵(n+1)s levels, and the 5p⁵5d[7/2]₃ level in xenon, have been measured and calculated as a function of electron energy up to a few eV above threshold at a fixed scattering angle of 135°. For argon, very good agreement is observed between the experimental data and predictions from a Breit-Pauli B-spline R-matrix (BSR) method, in which nonorthogonal orbital sets are used to optimize the target description. The agreement is still satisfactory for the more complex xenon target, suggesting that predictions from the BSR model should already be sufficiently accurate for many modeling applications. Nevertheless, the remaining discrepancies indicate the need for further refinement of the theoretical model.
Faculty
Faculté des sciences et de médecine
Department
Département de Chimie
Language
  • English
Classification
Physics
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/300086
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