Low energy elastic electron scattering from furan

We report normalized-experimental and theoretical differential cross-sections for elastic electron scattering by C$_{4}$H$_{4}$O (furan) molecules. The experimental data were taken at incident electron energies of 1eV, 1.5eV, 1.73eV, 2eV, 2.7eV, 3eV, 5eV, 7eV, 10eV, 20eV, 30eV and 50eV and covered the angular range between 10 to 130 degrees. The calculations employed the Schwinger multichannel method with pseudopotentials and were performed in the static-exchange and in the static-exchange plus polarization approximations. The calculated integral and momentum transfer cross sections clearly revealed the presence of two shape resonances ascribed to the B$_{1}$ and A$_{2}$ symmetries of the C$_{2v}$ point group, in very good agreement with the experimental findings. Overall agreement between theory and experiment is very good, especially for energies below 10eV.