Collisions of N+2 ions on noble gas atoms I . — Collision induced dissociation of N+2

The dissociation of 0.35 to 4.4 keV N+2 ions following collision on He or Xe targets was studied with two different apparatus. From the measurement of N+ fragment velocity distributions at varying energies of the electrons used to produce the parent N+2 ions, seven different processes were shown to occur ; for most of them the internal energies of the ion and the target in their initial and final states were determined. Tentative interpretations of the involved transitions are given.