Cu $L_{2,3}-M_{4,5}$ x-ray spectra of ${\mathrm{Cu}}_{10}$ ${\mathrm{Pd}}_{90}$

The Cu $L_{2,3}-M_{4,5}$ and Pd $L_3$-${\mathrm{N}}_{4,5}$ x-ray spectra of ${\mathrm{Cu}}_{10}$ ${\mathrm{Pd}}_{90}$ have been measured by recording the photoelectron spectra they excite from the C $1s$ level of graphite. They are compared with x-ray photoemission spectra of the ${\mathrm{Cu}}_{10}$ ${\mathrm{Pd}}_{90}$ conduction band. The comparison shows that the Cu $d$ band extends over the whole width of the alloy conduction band in agreement with the predictions of self-consistent-field Korringa-Kohn-Rostoker coherent-potential-approximation band-structure calculations. The Cu $L_{2,3}-M_{4,5}$ x-ray spectra of ${\mathrm{Cu}}_{10}$ ${\mathrm{Pd}}_{90}$ are accompanied by $L_{2,3}{M}_{4,5}-M_{4,5}{M}_{4,5}$ double-ionization satellites which show ${}_{}{}^1{}_{}{}^{}G_4^{}{}_{}{}^{}$ and ${}_{}{}^3{}_{}{}^{}F$ quasiatomic components.