Experimental X-ray tube spectra : Special issue on micro- and ultratrace X-ray fluorescence analysis

Experimental measurement of the spectral distribution emitted by an X-ray tube is presented using a solid state detector. Spectral distributions of several X-ray tubes differing in the material of the anode and its geometry have been measured and compared. Numerical values and relevant data for Cr, Cu, Mo, Rh and W X-ray tubes are presented.