Studies of K-shell x-ray energy shifts induced by MeV/u heavy ions

This paper reports that the K x-ray spectra of the thin target ₄₇Ag, ₄₈Cd, ₄₉In and ₅₀Sn were measured by an HPGe semi-conductor detector in collisions with 84.5 MeV ₆C⁴⁺ ions. Our experiment revealed the K\alpha x-ray energy shifts were not obvious and the K\beta_1 x-ray energy shifts were about 90～110 eV. The simple model of Burch et al has been previously used to calculate the K x-ray energy shifts due to an additional vacancy in 2p orbit. The present work extends the model of Burch to calculate the x-ray energy shifts of multiple ionized atoms induced by heavy ions with kinetic energy of MeV/u. In addition to our experimental results, many other experimental results are compared with the calculated values by using the model.