The L_2,3 Edges of Soft X-Ray Emission Bands of Na, Mg, and Al Metals

Abstract

The L_2,3 edges of soft X-ray emission bands of Na, Mg, and Al metals have been measured under the condition in which the self-absorption effects are negligible. The temperature dependence of the L₃ edges of Mg and Al is analyzed over the range from 70 K to 400 K. It is found that the edge spectral shape in the energy range E-E_F>−0.2 eV are insensitive to the transition probability and the density of states effects. The peaking parameters for the Mahan-Nozières-DeDominicis theory are estimated at 0.14, 0.10, and 0.12 for Na, Mg, and Al metals, respectively. These values are smaller than those derived from the absorption edge spectra. The temperature dependent phonon broadening was found in the case of Al metal, but not in Mg metal.