Development of methods for calculation of deuteron-lithium and neutron-lithium cross sections for energies up to 50 MeV

For the generation of evaluated nuclear data sets required for the Internat ional Fusion Materials Irradiation Facility project, the basic features of the deuteron-lithium and neutron-lithium nuclear interactions are examined. Factors complicating the evaluation of deuteron-lithium reaction character istics and weak points of previous calculations and evaluations are discuss ed. A new method to obtain double differential cross sections of particles emitted in d+Li reactions is described. The method is based on the diffract ion approach, a modified intranuclear cascade model, and the usual evaluati on techniques. The cross sections predicted by this method are in good agre ement with existing experimental data for deuteron interactions in thick li thium targets. The study of neutron-lithium interactions is performed on th e basis of different approaches: coupled channels, diffraction scattering, and direct breakup models.