UV photoelectron spectroscopy of thin films and interfaces between 3 and 50 eV and Auger analysis in the same apparatus using multichannel plates and a low energy diffraction head

Abstract

A new spectrometer was built with a combined function monochromator working over a wide region of the spectrum, i.e. between 3 and 50 eV. The ultrahigh vacuum experimental chamber contains modified four-grid low energy electron diffraction Auger electron optics where two multichannel plates are used, giving a gain of 10 5 in the photoemission current. Electron energy distribution curves are obtained with a computer data handling system. The photoemission electron energy distribution from pure lead films and from cadmium films of different thicknesses deposited onto a previously evaporated thicker lead layer was studied. From the good agreement between theoretical values and our experimental data for the Pb 5d peaks we obtained a resolution of 0.4 eV at 20 eV.