Vibrational branching ratios in photoionization of CO and N2.
We report results of experimental and theoretical studies of the vibrational branching ratios for CO 4sigma(-1) photoionization from 20 to 185 eV. Comparison with results for the 2sigma(u)(-1) channel of the isoelectronic N2 molecule shows the branching ratios for these two systems to be qualitatively different due to the underlying scattering dynamics: CO has a shape resonance at low energy but lacks a Cooper minimum at higher energies whereas the situation is reversed for N2.
Department of Chemistry, Louisiana State University, Baton Rouge, Louisiana 70803, USA.
G J
GJ
Rathbone
R M
RM
Rao
E D
ED
Poliakoff
Kwanghsi
K
Wang
V
V
McKoy