Microscopic nuclear-structure calculations for the solar-neutrino detector [formula omitted] and close-lying isobars

• Published in: Nuclear physics. A Vol. 714; no. 3; pp. 673 - 695
• Main Authors: Holmlund, E., Suhonen, J.
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.02.2003
• Subjects: Beta decays; Energy levels; Microscopic quasiparticle–phonon model; Neutrino-induced charge-changing transitions; Odd-mass A=71 nuclei; 23.40.-s; Odd-mass A=71 nuclei; Energy levels; Beta decays; 27.50.+e; Microscopic quasiparticle–phonon model; Neutrino-induced charge-changing transitions; 21.60.Jz
• ISSN: 0375-9474
• DOI: 10.1016/S0375-9474(02)01397-0

In the present solar-neutrino experiments, mainly observing the pp contribution of the solar-neutrino flux, an important role is played by 71 Ga . 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 log ft 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.