State selective capture measured for fast H-like Bi projectiles in collisions wtih Ni target atoms

摘要

For 82-170 MeV/u Bi(yields)Ni collisions the total as well as final state sensitive cross sections for non-radiative electron capture have been measured. Due to the large shell and subshell splitting in such a high-Z projectile the applied X-ray/particle coincidence method enables us to probe the theoretical predictions even with respect to the final orbital momentum dependency of this capture mechanism. For the case of the ''higher potential'' version of the eikonal approximation good agreement with the total cross sections data is obtained. However, the orbital momentum dependence given by the same theoretical formulation is at variance with the experimental findings. (orig.)