摘要
The inner-shell ionization induced by the ion-solid collisions has been extensively studied in the last decades.In these studies,tabulations and more recent reviews of the status for light ions impacting show that the direct ionization is the main mechanism responsible for K-shell vacancy production of projectile ions and target atom[1;2],and most of the available experimental data,spanning a large range of relative velocities and target atomic numbers,are accurately described in a consistent way by ECPSSR theory.However,it is paid less attention to K production by heavy ion near Bohr velocity.