Electron Impact Ionization and Dissociation of N3

Absolute cross sections for electron impact ionization and dissociation of N3+ ions have been measured in a crossed-beams apparatus. In this experiment, three product ions were collected separately: N3+, N+ and N2+. The single ionization process (formation of N32+) shows a threshold around 22 eV with a maximum cross section of (1.61 ± 0.01)x 10-17 cm2 at 120 eV. The two dissociative reactions leading to N+ and N2+ fragments are also analyzed in detail.