ABSOLUTE CROSS SECTIONS FOR ELECTRON IMPACT IONIZATION AND DISSOCIATION OF N2+ D.S. Belic, J. Jureta, E.M. Bahati, H.H. Cherkani and P. Defrance Institut de Physique, chemin du Cyclotron 2, B-1348 Louvain-la-Neuve, Belgium Absolute cross sections for electron impact ionization and dissociation of N2+ ion have been measured from threshold to about 2.5 keV.