Scattering of low-energy electrons byC2H4O

Abstract

We report elastic integral, differential, and momentum transfer cross sections for collisions of low-energy electrons with ethylene oxide $({\text{C}}_{2}{\text{H}}_{4}\text{O})$. We employed the Schwinger multichannel method with pseudopotentials in the static-exchange and static-exchange-polarization approximations, for energies from 0.7 to 20 eV. Experimental studies on vibrational excitation of ${\text{C}}_{2}{\text{H}}_{4}\text{O}$ by electron impact reported two shape resonances at around 2.6 and 4.8 eV, while another experimental study on total cross sections reported shape resonances at around 2.7 and 4.6 eV. Our integral cross section shows a peak at around 5 eV which is a shape resonance belonging to the ${B}_{2}$ symmetry. We have not found another low-energy shape resonance in our calculations.