Cross sections for 11-14-eV e-H2 resonant collisions:: Vibrational excitation

Resonant vibrational excitation (RVE) cross sections have been calculated for the electron-H-2 molecule collisions in the energy range 11-14 eV involving the (2)Sigma(+)(g) excited electronic state of the molecular hydrogen ion H-2(-). This state, whose threshold is located around 14 eV, gives rise to the so-called series a of the observed peaks in electron-impact differential cross-section measurements. The calculations have been performed within the local complex potential approximation by using the available theoretical potential energy and width for the (2)Sigma(+)(g) resonant state. The cross sections for all nu(i)=0 ->nu(f)=1-14 RVE transitions have been calculated. A satisfactory agreement of calculated cross sections with the available experimental data is obtained.