MO X-Ray Production in Collisions of F+q with Ne

The production of molecular-orbital (MO) x rays has been observed in collisions of 19 MeV 199F+q with Ne as a function of incident projectile charge state,q. The MO production rate was found to depend weakly upon the L-shell occupation number and to increase by an order of magnitude with an initial K-shell vacancy. Two incident projectile K-shell vacancies approximately doubled the single vacancy MO x-ray yield.