Production of 3He and 6He fragments in the interaction of 12C with 93Nb at 400 MeV

Spectra of inclusive double differential cross sections of 3He and 6He fragments produced in the interaction of 12C with 93Nb at 400 MeV are measured and analyzed. As was found for the production of intermediate mass fragments in this and similar reactions involving light projectiles, the spectra can to a large extent be satisfactorily reproduced only by considering the contribution of projectile break-up as well as nucleon coalescence.