Abstract
In this work, we report a theoretical study on electron collisions with $\mathrm{OH}$ radicals in the low and intermediate energy ranges. Calculated elastic differential, integral, and momentum-transfer cross sections as well as grand-total (elastic $+$ inelastic) and total absorption cross sections for electron-$\mathrm{OH}$ collisions are reported in the $1--500\text{\ensuremath{-}}\mathrm{eV}$ range. A complex optical potential composed by static, exchange, correlation-polarization plus absorption contributions, derived from a fully molecular wave function, is used to describe the interaction dynamics. The Schwinger variational iterative method combined with the distorted-wave approximation is applied to calculate scattering amplitudes. Present calculated results are compared with the existing data for electron-$\mathrm{OH}$ scattering in the literature. Also, comparison made between our calculated cross sections for elastic scattering with the theoretical and experimental results for electron-${\mathrm{H}}_{2}\mathrm{O}$ collisions has revealed remarkable similarity even at incident energies as low as $2\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$.
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