Microscopic nuclear-structure calculations for the solar-neutrino detector 71Ga and close-lying isobars Original Research Article

In the present solar-neutrino experiments, mainly observing the pp contribution of the solar-neutrino flux, an important role is played by View the MathML source. The structure of this detector nucleus and three of its isobars have been calculated by using the microscopic quasiparticle–phonon model. Using a realistic effective two-body interaction in a realistic valence space, the method yielded energy spectra in good agreement with experiments. The calculated logft values for a number of spontaneous and neutrino-induced Gamow–Teller transitions, when compared with the experimental results, gave qualitatively correct but overestimated transition-strength values in most cases.