Fusion, direct and total reaction cross sections of the ¹°B+¹⠴N system up to E/sub 14N/ = 180 MeV

Abstract

The fusion cross section of the ¹°B+¹⠴N system has been measured at five energies covering the range E/sub 14N/ = 86-180 MeV. Angular distributions of fusion and direct reaction components for products from Z = 3 to Z = 11 have been determined. Hauser-Feshbach calculations of the Z distributions, energies and angular distributions of the evaporation residues are presented and compared to the data. The fusion cross section decreases slowly with increasing energy and reaches a maximum angular momentum of about 21 +- 1 h. The fusion cross section is discussed in terms of entrance channel models and compound nucleus formation and is compared to that of the ¹²C+¹²C system. The experimental total reaction cross sections are in good agreement with optical model calculations with parameters deduced from elastic scattering