K-edge effect calibration of the Ge(Li)/Si(Li)-multichannel analyser system

The positions of the steps produced in the spectral distribution of a bremsstrahlung beam by a mixture of powdered substances, give a single measurement calibration of the Ge(Li)/Si(Li)-multichannel analyser system as reported here. Through a set of linear equations, from the step heights one gets a chemical analysis of the mixture, or pointwise the spectral distribution of the primary X-ray beam.