XAFS spectra in the high-energy region measured at SPring-8

XAFS spectra near K absorption edges of Pt (78.4 keV) and Pb (88.0 keV) wer e measured in transmission mode with Si (511) planes of an adjustable incli ned double-crystal monochromator at bending-magnet beamline BL01B1 at SPrin g-8. The energy resolution was estimated as good as 7 eV at Pt K-edge, bene fitted from the high brilliant x-rays from the SPring-8 storage ring. Blunt edge jumps and reduction of MAPS amplitude were observed owing to the fini te lifetime of the core hole as predicted theoretically. Local structure pa rameters have been successfully evaluated from EXAFS signal above the Kedge .