An intermolecular potential for nitrogen from a multi-property analysis

New measurements are reported for the velocity dependence of the integral cross-section for N-2-N-2 scattering showing the glory oscillations. These data are analysed along with recent high precision second-virial coefficient data and traditional transport property measurements to yield an improved N-2-N-2 potential energy surface by adjusting certain parameters in the fit to this surface by van der Avoird et al. The new potential gives improved agreement with the integral cross-section, virial and transport data. Transport and relaxation cross-sections sensitive to anisotropy are very close to those obtained previously using the van der Avoird et al. surface. New comparisons with rotational relaxation and NMR relaxation data are reported.