Figure 9
Comparison of four theoretical models, using the constant Q cut (width of 0.067 Å−1) for Q = 4.6 Å−1 from Fig. 8, with experimental data for aluminium at 10 K obtained on the MARI spectrometer, ISIS (grey line). (a) The original LJ 12–6 model, (b) the LJ 12–6 model fitted from MARI experimental data, (c) the original Mei–Davenport model and (d) the Mei–Davenport model fitted from MARI experimental data. The horizontal axes are energy transfer and vibrational frequency (meV and cm−1, respectively) and the vertical axis is S′coh(Q, ω). |