Dissociation of N2+2 ions into N+ fragments

Pairs of N+ ions emitted in the dissociation of N2+2 ions were observed in coincidence. Three distinct dissociation channels are reported with total kinetic energy releases of 7.8, 10.2, and 14.8 eV. The dissociative states of N2+2 were formed by bombardment of N2 by 1 MeV He+ ions. The kinetic energy spectra of the N+ ions were measured using the time-energy spectroscopy technique, wherein the ions released in the dissociations can be separated according to their mass-to-charge ratios and their kinetic energy spectra can be recorded. Essentially all of the N+ ions observed resulted from the dissociation of N2+2. The results reported here are in generally good agreement with published reports of electron induced dissociation of N2+2.