CONICET | Buscador de Institutos y Recursos Humanos

The nuclear gross theory, originally formulated by Takahashi and Yamada (1969 Prog. Theor. Phys. 41 1470) for the beta-decays, is applied for the electronic-neutrino nucleus reactions, employing a more realistic description of the energetics of the Gamow-Teller resonances. Themodel parameters are gauged from the most recent experimental data, both for beta^- decay and electron-capture, separately for even-even, even-odd, odd-odd, odd-even nuclei. The numerical estimates for neutrino-nucleus cross sections agree fairly well with previous evaluations done within the framework of microscopic models. The formalism presented here can be extended to the heavy nuclei mass region, where weak processes are quite relevant, which is of astrophysical interest because of its applications in supernova explosive nucleosynthesis.