Vibrationally elastic cross sections for electron scattering from water molecules

摘要: Differential, integral and momentum transfer cross sections are calculated for the vibrationally elastic scattering of electrons from H,O. An ab inirio static potential is used interaction. Effects electron exchange target polarization taken into account approximately. In particular, contribution dipole evaluated carefully so that an accurate section obtained forward scattering. Calculations carried out energies 6-50 eV a detailed comparison made with experimental data. The differential in good agreement results. theoretical value deviates greatly measured one. It suggested this discrepancy comes insufficient extrapolation to direction, where increases very steeply. also pointed measurement total suffers similar problem, i.e., correction small-angle