The plots (a, c) and the plots (b, d) represent the scattering cross sections and the average momentum transfer below the thermal cutoff energy as already shown in Figure 5. Plots (a, c) compare the previous results with the inelastic neutron scattering cross section calculated with the NJOY code using $S_{\mathrm{CLM}}^{\mathrm{LEAPR}}(\alpha ,\beta )$ tables generated with its LEAPR module. Plots (b, d) compare the ${\alpha }_{\mathrm{CLM}}^{\mathrm{LEAPR}}$ correction deduced from the $S_{\mathrm{CLM}}^{\mathrm{LEAPR}}(\alpha ,\beta )$ tables generated by LEAPR using Eq. (27). The CLM calculations were performed by using the same partial phonon densities of states shown in Figure 2.