Study of enhancement of total cross sections of reactions with 6He, 6,9Li nuclei

Abstract

The energy dependence of total cross sections of reactions 6 He + Si and 6,9 Li + Si in the beam energy range 5-30 MeV/nucleon has been measured. An agreement with the published experimental data for the reaction 6 He + Si was obtained. For the reaction 9 Li + Si new data in the vicinity a local enhancement of the total cross section was obtained. Theoretical analysis of possible reasons of appearance of this peculiarity in the collisions of nuclei 6 He and 9 Li with Si nuclei has been carried out including the influence of external neutrons of weakly bound projectile nuclei.