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\beta-decay spectroscopy


\beta decay to states in the daughter nucleus provides information on the degree of overlap between the neutron and proton states in the parent and daughter nuclei. Observation of \gamma-radiation from excited states in the daughter nuclei yields invaluable spectroscopic information on the energies and characteristics of its low-lying excited states. This spectrum of states permits the characterization of the structure of the daughter nucleus concerning its rigidity, deformation and the arrangement of its nucleons.

 

\beta-decay is also the first approach to study new nuclear species along the r-process path and the determination of their half-life and decay modes gives the first information on their structure. These studies can be done with a production rate as low as 0.1-1/s. Exotic nuclei that are far beyond the reach of current accelerator facilities play a role in these astrophysical processes and SPIRAL2 offers the possibility to reach some of the lighter cases along the r-process path.