Low energy (e, 2e) differential cross-section measurements on the 3σg and 1πu molecular orbitals of N2

Experimental results are reported for the (e, 2e) differential ionization cross-section from the 3σg and 1πu valence molecular orbitals of molecular nitrogen N2 at incident electron energies between 25.6 and 76.7 eV. The measurements have been conducted in a coplanar symmetric geometry in an energy regime where ionization is sensitive to contributions from shape resonances and autoionizing doubly excited states. The results suggest that these additional channels may contribute to the measured cross-section. The measurements also display trends qualitatively similar to previous results at higher incident electron energies using the same geometry.