Cj. Fisher et al., NON-DIPOLE PHOTOEMISSION EFFECTS IN X-RAY STANDING WAVE-FIELD DETERMINATION OF SURFACE-STRUCTURE, Journal of physics. Condensed matter, 10(35), 1998, pp. 623-629
Non-dipolar effects in the angular distribution of core level photoemi
ssion are shown to have a substantial influence on the interpretation
of x-ray standing wavefield determinations of surface adsorption struc
tures when the x-ray absorption is monitored by photoemission, even at
photon energies below 3 keV. Results for I adsorption on Cu(lll) are
shown to be compatible with theoretical calculations for atomic Xe.