Fig. 2: Inelastic neutron scattering spectra for solid and liquid Ge and Pb.

Total S(Q, ε) in the crystalline solid (top left) and liquid (bottom left) phases after background subtraction, with selected S(Qn, ε) (right) normalized to S(Q) for (a) Ge and (b) Pb near their respective melting temperatures. The S(Q, ε) intensity bars for the solid and liquid phases of each element are the same and are on a log scale. The dashed lines under the constant Q cuts are quasielastic fits to the data that include a convolution with the Q and ε-dependent instrument resolution function. Standard errors (grey bars) are generally smaller than the symbol size.