Mechanisms ofK-vacancy production determined from the impact-parameter dependence ofKx-ray production in 1.4-MeV/amu Kr + Ge collisions

Abstract

The impact-parameter dependence of the $K$-vacancy production probability $P\left(b\right)\mathrm{}$ in the bombardment of a Ge solid target with 1.4-MeV/amu ${\mathrm{Kr}}^{24+}$ projectiles has been measured by recording coincidences between $K$ x rays and scattered ions. The range of impact parameters was always inside the $K$-shell radius of the united atom. The sum of the ionization probability for Kr and Ge and the vacancy-sharing ratio as a function of the impact parameter are compared to existing theoretical-model calculations. The two components corresponding to $\mathrm{KL}$ and $\mathrm{KM}$ transitions were resolved for both the Kr and Ge $K$ x rays, and variations in the relative intensities yield information about transitions in the outer shells of the collision systems.