Differential elastic electron scattering cross sections forN2from 0 to 30 eV

We extend our recent work [Phys. Rev. A 16, 1423 (1977)] on total elastic electron scattering cross sections for ${\mathrm{N}}_2$ to include differential cross sections from 0 to 30 eV. Extensive comparisons with the results of experiments and other theories are made. The overall agreement is good, indicating that the multiple-scattering method is capable of providing a realistic first approximation to the electron-molecule interaction. At the same time, small systematic disagreements with experiment indicate clearly the need and objective of future improvements.