H-atom rearrangement in NH3 under ion impact

Abstract

The rearrangement of H-atoms is studied in the interaction of energetic (50-2000 keV) H + and Ar q+ (q = 1, 8) ions with NH 3 . The technique of recoil ion momentum spectrometry is used to obtain various dissociation channels involved in these collision events. The variation of the relative yields of the H 2 + and H 3 + ions is obtained as a function of the interaction strength q/v, where q and v are the charge state and velocity of the projectile. It is observed that the yield of H 2 + increases with q/v of the projectile, however, H 3 + is observed only at the highest q/v.