Determination of K-L total vacancy transfer probabilities using a weak gamma source in 2π geometrical configuration.

The K shell intensity ratios K(β)/K(α) for 9 elements in the atomic range 40 ≤ Z ≤ 50 have been determined using a weak (133)Ba gamma source at excitation energy of 80.997 keV. The K-L total vacancy transfer probabilities (η(KL)) for these elements have been determined. K x-rays emitted by samples were detected using a CdTe semiconductor detector (resolution <1.2 keV for the (57)Co gamma ray at 122 keV) with a 2π solid angle. The measured values were compared with the theoretical values calculated using Scofield's tables based on the Hartree-Slater and Hartree-Fock theories and available experimental values.