FIRST RESULTS FROM THE ESCA MICROSCOPY BEAMLINE ON ELETTRA

The results of the first experiments with test samples, tool steel and polycrystalline Sn carried out with the scanning photoemission micros cope built on the ELETTRA storage ring in Trieste are presented and di scussed. The scanning photoemission microscope uses a zone plate optic al system for demagnification of the photon beam to submicron dimensio ns. The present performance of the microscope in photoemission allows elemental and chemical mapping and small-spot photoelectron spectrosco py with lateral resolution better than 200 nm. The reported results sh ow how photoemission microscopy can distinguish the spatial distributi on of carbide phases with different Fe content at the surface of a too l steel and the correlation between inhomogeneous oxidation of a polyc rystalline Sn sample and its grain structure. (C) 1977 by John Wiley & Sons, Ltd.