Density of State Effects in AgL3M4,5M4,5Threshold Auger Spectra

Abstract
The energy distribution of L3M4,5M4,5 Auger electrons emitted from solid Ag is studied as a function of the exciting photon energy in the L3 threshold region. The G41 Auger line not only exhibits a Raman-type energy dispersion and a reduced core hole lifetime broadening, but its line shape is also markedly modulated. For subthreshold excitation, additional structure appears within the highly asymmetric emission profile. This is interpreted as being due to the local density of empty d states probed in the intermediate dipole transitions. A simple numerical model qualitatively reproduces the gross features of the measured electron distribution.