Implementation of one-phonon correction method to calculate inelastic scattering law data in nuclear data processing code NECP-Atlas

One-phonon correction method has been implemented into the thermal scattering law (TSL) calculation module sab_calc in nuclear data processing code NECP-Atlas, to enhance the accuracy of TSL data for inelastic scattering. This method relaxes the incoherent approximation used in the conventional TSL calculation code. The updated sab_calc module is used to calculate the TSL data of graphite, α-SiO₂, and α-Al₂O₃. The microscopic cross sections of these materials are calculated with the obtained TSL data, and compared with the available experimental and theoretical data. The results show that the sab_calc module are capable of providing accurate TSL data for inelastic scattering.