SURFACE EXTENDED X-RAY ABSORPTION FINE STRUCTURE APPLIED TO THE POLYCRYSTALLINE SURFACES OF REAL THERMIONIC CATHODES D. NORMAN, R. A. TUCK, H. B. SKINNER, P. J. WADSWORTH, T. M. GARDINER, I. W. OWEN, C. H. RICHARDSON et G. THORNTONJ. Phys. Colloques, 47 C8 (1986) C8-529-C8-532DOI: https://doi.org/10.1051/jphyscol:1986899