HIGH-TEMPERATURE EXAFS EXPERIMENTS ON LIQUID KPB ALLOYS ANALYZED WITH THE REVERSE MONTE-CARLO METHOD

A new sample chamber has been designed which allows high temperature Extended X-ray Absorption Fine Structure (EXAFS) experiments on metallic melts which offer a number of special experimental problems: they are highly corrosive, have high vapour pressures and strongly absorb X-rays. The EXAFS spectrum of an equiatomic KPb alloy at the Pb L(III) edge in the solid as well as the liquid state have been obtained. Data analysis was performed with the Reverse Monte Carlo method (RMC) and is shown to be consistent with data obtained from neutron diffraction experiments.