Kα2Kα1X-Ray Intensity Ratios forZ>50

Abstract
The Kα2Kα1 x-ray intensity ratios for 36 elements between Sb51 and Am95 have been measured with a Cauchois-type bent-crystal spectrometer and a Ge(Li) detector. The present experimental results are systematically 5-10% higher than the values reported by Beckman and by Wapstra et al., but agree within experimental errors with the recent theoretical calculations of Scofield.