Single electron capture by N12+ in rare gas targets between 60 keV and 200 keV

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Charge exchange measurements in thin targets of the rare gases by a N2+ beam have been made between 60 keV and 200 keV. The singly charged ions produced in the collisions are expected to be produced in only a few allowed states, and a Rapp and Francis type calculation for the weighted average cross section to these allowed states was found to have generally the correct energy dependence but to be too small by a factor which increased from 4 in He to more than 10 in Xe. There was some evidence that the 4P state of N2+ may have been present in the beam in varying amounts.