Dynamic scattering function for high-temperature liquid lead

Abstract

Liquid lead at 1173 K has been studied by the thermal neutron scattering technique. The symmetrized scattering function is obtained at constant momentum transfers from 1.8 to 7.1 ${\mathrm{\AA }}^{-1\mathrm{}}$. The highest observable energy transfer is 8 meV for the lowest momentum transfers and 28 meV for the highest. The measurement is corrected for experimental effects and special care has been given to the multiple-scattering corrections and subtraction of the container background. The first two even moments of the scattering function are determined and compared to an independent diffraction measurement and theoretical values, respectively. The full width at half maximum of the symmetrized scattering function is determined up to the ideal gas limit and compared with the corresponding quantity obtained at a lower temperature.