Figure 7
Selected cuts at constant Q through the experimental S'(Q, [omega]) (black line) for aluminium at 10 K obtained on the MARI spectrometer, ISIS, from Q = 1.0 Å-1 to Q = 7.0 Å-1. The horizontal axes are energy transfer and vibrational frequency (meV and cm-1 respectively) and the vertical axis is S'coh(Q, [omega]). The width of cut is 0.067 A-1 and the corresponding cut through the LJ 12-6 theoretical data (fitted to elastic constants) is given as the red line. All intensities are to scale.  [article HTML]