Investigation of Reaction Cross Sections for Beams of 8 Li, 8 He on 28 Si, 59 Co, 181 Ta Targets

The values of the total cross sections σ R of the 8 Li, 8 He + 28 Si, 59 Co, 181 Ta reactions in the beam energy range from 6 to 46 A MeV have been measured for the first time using registration of the prompt neutron and gamma radiation by a 12-detector 4π-gamma spectrometer. The values of the cross sections and the multiplicity distributions for the emission of γ quanta and neutrons were calculated with consideration of the distributions over the number of triggered detectors. Analysis of the neutron multiplicity distributions was performed based on the statistical model. A microscopic description of nuclear collisions was performed based on the numerical solution of the time-dependent Schrödinger equation for the loosely bound outer neutrons of projectile nuclei.