Generalized Reduced R-matrix Theoretical Analysis of ⁵Li System

Based on the generalized reduced R-matrix theory, the RAC program (R-matrix Analysis Code) is used to perform a comprehensive analysis of all available experimental data for the ⁵Li system, providing a complete set of evaluated nuclear data in the energy ranges of 1×10^–3～20 MeV for deuteron-induced reactions and 1×10^–3～34.3 MeV for proton-induced reactions. The evaluated data are internally consistent. The integral cross sections include reactions such as ³He (d,p)⁴He and ⁴He (p,d)³He, while the differential cross sections include ³He (d,p)⁴He, ⁴He (p,d)³He, ³He (d,d)³He, and ⁴He (p,p)⁴He. The RAC evaluation results are in good agreement with both experimental data and ENDF/B–VIII.1 evaluations. By incorporating the constraints of the direct and inverse reactions into the ⁵Li system, the reliability of the evaluated cross sections ³He (d,p)⁴He and ⁴He (p,d)³He has been improved. For the ⁵Li system, a key focus is the ³He (d,p)⁴He reaction, for which the ENDF/B–VIII.1 evaluation shows noticeable deviations from existing experimental data beyond 10 MeV, whereas the RAC results are more consistent with current experimental data.