Microscopic calculations of low-energy reaction cross sections

Microscopic calculations of nuclear reaction cross sections and total reaction probabilities are compared with measurements for the d+Si, ${}_{}{}^{3,4}{}_{}{}^{}\mathrm{He}$+Si, and d+Ge systems at energies ranging from 2 to 53 MeV/nucleon. Good agreement is obtained, except for ${}_{}{}^3{}_{}{}^{}\mathrm{He}$+Si at the very lowest energies, when zero-range nucleon-nucleon forces are assumed and realistic nuclear density distributions are used in the tail regions, where the models are most sensitive. The agreement is less good for finite-range forces. A strong absorption model gives much poorer agreement with the recent ${}_{}{}^4{}_{}{}^{}\mathrm{He}$+Si measurements than do the microscopic models.