Abstract
The charge transfer reaction Ar(+)+N(2)→Ar+N(2)(+) has been investigated in a crossed-beam experiment in combination with three-dimensional velocity map imaging. Angular-differential state-to-state cross sections were determined as a function of the collision energy. We found that scattering into the first excited vibrational level dominates as expected, but only for scattering in the forward direction. Higher vibrational excitations up to v'=6 have been observed for larger scattering angles. For decreasing collision energy, scattering into higher scattering angles becomes increasingly important for all kinematically allowed quantum states. Our detailed measurements indicate that a quantitative agreement between experiment and theory for this basic ion-molecule reaction now comes within reach.
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