Calculation of Total Reaction Cross Sections Induced by Intermediate Energy α-Particles with the Boltzmann-Uehling-Uhlenbeck Model

The Boltzmann-Uehling-Uhlenbeck (BUU) model, which includes the Fermi motion, the mean field, individual nucleon-nucleon (N-N) interactions and the Pauli blocking effect, etc., is used to calculate the total reaction cross section sigma(R) induced by alpha-particles on different targets in the incident energy range from 17.4 to 48.1 MeV/u. The calculation result can well reproduce the experimental data. The nucleus-nucleus interaction radius parameter r(0) was extracted from experimental sigma(R). It is found that r(0) becomes constant with the increasing mass number of target.