Identification of prominent features in the theoretical poly-CINS data set presented in Fig. 3. The horizontal axes are energy transfer and vibrational frequency (meV and cm−1, respectively) and the vertical axis is S′coh(Q, ω). Major scattering features are labelled for each cut in terms of a q point along the direction in the conventional reciprocal lattice [hkl]. Black arrows denote an identified feature, with appropriate [hkl], in the LJ 12–6 theoretical data and grey arrows denote prominent features that do not correspond to any of the dispersion curves used in this analysis.