Isospin dependence of nucleus-nucleus interaction from data on scattering of isobaric nuclei

A formalism for calculating the central, spin-orbit, and Coulomb components of the mean field in the optical potential for nucleus-nucleus interaction is developed in the microscopic approach. In this formalism, the isovector components of interaction are considered explicitly, and the exchange knockout of nucleons is taken into account exactly. The optical potential is constructed by combining the calculated components and the phenomenological dynamical polarization potential. The absorption part of the dynamical polarization potential is represented by the volume and surface Woods-Saxon functions, and its real part is constructed from the same forms by using a dispersion relation. With this potential, a new, global analysis of experimental data on 3He+14C and 3H+14C scattering at Ec.m.s.=59 MeV and on 3He+14C scattering at Ec.m.s.=33 MeV is performed. The radial dependences of the isovector component and dynamical polarization potential and their contributions to the isospin effect are found. Calculations show that, in 3H+14C scattering, a stronger isospin effect is expected at Ec.m.s.=33 than at 59 MeV