Journal article

Electron scattering in ethene: Excitation of the ã³B1u state, elastic scattering, and vibrational excitation

  • Allan, Michael Department of Chemistry, University of Fribourg, Switzerland
  • Winstead, C. A. A. Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, USA
  • McKoy, V. A. A. Noyes Laboratory of Chemical Physics, California Institute of Technology, Pasadena, USA
    16.04.2008
Published in:
  • Physical Review A. - 2008, vol. 77, p. 042715
English Experimental and calculated absolute differential cross sections for the scattering of low-energy electrons from ethene are presented. Emphasis is on the excitation of the ã³B1u³(π,π*) state, but selected elastic and vibrational excitation cross sections are also given. In contrast to earlier calculations, which were nearly a factor of 2 too large, the present calculation agrees very well with the experimental triplet excitation cross section in the threshold region. The improvement is due primarily to the inclusion of target polarization, which results in proper positioning of the π* resonance, whose high-energy tail dominates the triplet state excitation near threshold. The present experimental elastic cross sections agree very well with recent calculations taking into account target polarization.
Faculty
Faculté des sciences et de médecine
Department
Département de Chimie
Language
  • English
Classification
Chemistry
License
License undefined
Identifiers
Persistent URL
https://folia.unifr.ch/unifr/documents/300644
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