Coherent excitation of hydrogen-like relativistic heavy ions in a crystal: Structure of electronic levels of an ion and resonance width

The width of the resonance arising due to coherent excitation of electronic levels of relativistic hydrogen-like heavy ions penetrating through aligned crystal is estimated. The influence of Stark- and Zeeman effects, wake potential and eigen structure of electronic levels of heavy ion is considered. It is shown that the fine structure of electronic levels of heavy ions will play the key role in forming of the shape and width of resonances, at the ion energy greater than few GeV/nucleon.