Experimental K-Fluorescence Yields for the Elements Z = 22 to 30 and 32

Atomic fluorescence yields of the K shell, ωK, are measured with x-ray excitation for Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, and Ge. The measurements are made from totally absorbing specimens in the symmetrical reflection arrangement with a conventional diffractometer. The fluorescence yields are evaluated using recently published x-ray attenuation coefficients and making an approximation for the scattering contribution. The experimental uncertainties of the ωK values are 2 to 4%. The present values are considerably higher than most of the previously published experimental and theoretical results, but they are in agreement with a recent calculation based on Hartree-Fock-Slater wave functions.