Dynamic scattering function of liquid lead at 623 K

Abstract

Liquid lead has been studied at 623 K by thermal neutron scattering technique. The range of momentum transfers is from 1.0 to 6.8 ${\mathrm{\AA{}}}^{\ensuremath{-}1}$. Up to 2.6 ${\mathrm{\AA{}}}^{\ensuremath{-}1}$ the highest energy transfer is 12 meV and above 2.6 ${\mathrm{\AA{}}}^{\ensuremath{-}1}$ it is 18 meV. The measurement is corrected for experimental effects including multiple scattering. No deconvolution of the resolution function has been performed. Normalization to the structure factor, obtained from an independent diffraction measurement has been done. The result is presented in the form of constant momentum transfers. The first and second moments have been compared with theoretical values. Intersections of the dynamic scattering function for constant momentum transfers between 1.0 and 1.4 ${\mathrm{\AA{}}}^{\ensuremath{-}1}$ show inelastic peaks originating from collective excitations in the liquid.