Soft-X-RayL2,3Spectrum and Electronic Band Structure of Chromium

The soft-x-ray $L_{2,3}$ emission and absorption spectra from pure chromium are shown and the effects of satellite emission and self-absorption are assessed. Features of the $L_3$ spectrum are discussed in terms of the energy-band structure. Results are evaluated by comparing the $L_3$ spectrum with the x-ray $K$ and $M$ spectra, with ultraviolet photoemission measurements, and with band-structure calculations. There is good agreement between theory and experiment as to the width of the occupied states, the position of the Fermi energy, and the position of most maxima and minima in both the occupied and vacant portions of the density of states. Some disparities are also observed but they involve primarily the fine features of the structure.