Skip to main content
eScholarship
Open Access Publications from the University of California

Threshold vibrational excitation of CO{sub 2} by slow electrons

  • Author(s): Vanroose, Wim
  • Zhang, Zhiyong
  • McCurdy, C.W.
  • Rescigno, T.N.
  • et al.
Abstract

Threshold structures, reminiscent of those seen in the polar hydrogen halides, have recently been observed in the cross sections for electron impact excitation of certain vibrational levels of the non-polar CO2 molecule. These structures occur at energies outside the range where shape resonances dominate the dynamics. We propose a virtual state model that describes the multi-dimensional nuclear dynamics during the collision and explains quantitatively the selectivity observed in the excitation of the Fermi dyad, as well as the pattern of threshold peaks and oscillations seen in the upper levels of the higher polyads.

Main Content
Current View