X-Ray Production in Ion-Atom Collisions: The Influence of Level Matching

Abstract
Cross sections for L x-ray production in Cu have been measured for collisions between Cu and a wide range of heavy ions and atoms, for collision energies in the range 40 keV to 1.1 MeV. The cross sections show a very strong cyclic dependence on the Z of the collision partner. These data indicate a lack of reciprocity in the roles of target and projectile.