The characteristic radiation of copperK beta including radiative Auger processes

Two characterisations of the Cu Kβ1,3 spectrum are developed, which are robust and transferable to other experimental x-ray geometries. By observing and considering the significant contribution of radiative Auger emission to the Kβ profile, we obtain an improved and more robust characterisation. The contribution of the KM2,3M4,5 and KM2,3N1 radiative Auger satellites to the Kβ1,3 spectrum is measured to be 1.96%. The contribution of radiative Auger emission is often significant and should be included in defining characteristic x-ray spectra. This is a step in the renewed efforts to resolve inconsistencies in characteristic x-ray spectra between theory and common experimental geometries. The spectrum was measured using a rotating anode, monolithic Si channel-cut double-crystal monochromator and backgammon detector. The experimental setup provides insight into the portability of spectral characterisations of x-ray spectra.