Vibrational excitation of H2O by electron impact

We present results for the vibrational excitation of H2O by low-energy electrons (< 10 eV). We calculate differential cross sections for the first excited states for all three modes using an R-matrix approach, at the static-exchange level, and the Chase approximation. Correction to the scattering amplitude for all partial waves (l > 3) is made using a closure approximation. The results are consistent with other theoretical treatments. For the bending mode there is agreement with two older experiments but disagreement with a more recent experiment at 7.5 eV However, the present results for the stretch modes are less than the experimental values.