Inner‐shell processes in heavy, few‐electrons projectiles

In this article, first the x‐ray generating processes in heavy, few‐electrons projectiles are summarized within the generalized picture of reduced velocities (adiabaticity). The general energy and Z dependences are shown. Then, special emphasis is given to RTE (resonant transfer and excitation, see also [1]) as this process is the dominant one in the treated low intermediate velocity region. The advantage of higher resolving capability at heavier projectiles is elucidated. A method to isolate a single RTE resonance, the one to the 2s2p 1P1 level for hydrogenic projectiles, is described. The interesting potentiality to utilize RTE for spectroscopic structure studies of heavy few‐electrons projectiles is demonstrated with the investigation of the 2E1 decay of the 1s2s 1S0 state in He‐like ions. In a last chapter we will change subject and concentrate on multiple‐electron capture yielding to x‐ray emission.