High-temperature EXAFS study of solid and liquid rhodium

Accurate EXAFS spectra of solid and liquid rhodium at very high temperature were recorded at the E.S.R.F (BM29, Grenoble) The short range g(r) was det ermined using reliable EXAFS data-analysis methods based on ab-initio multi ple scattering calculations. Experimental results were compared with molecu lar-dynamics (MD) calculations. The first neighbor distribution departs fro m a simple Gaussian model, even at moderate temperatures in the solid phase .