Abstract
The β decay of several nuclei beyond 208Pb has been investigated using the FRS+RISING set up at the GSI accelerator facilities, in Darmstadt. This contribution provides a compilation of the β-decay information obtained for neutron-rich Tl, Pb and Bi isotopes. On the basis of the new data, a general overview on the β-decay systematics in this mass region is provided. The study reveals the impact of the microscopic structure of these nuclei on the descriptive power of standard theoretical models. These are used to extrapolate gross properties towards the neutron-drip line, where the nuclei that concur in the formation of the third r-process abundance peak reside. Deficiencies in their predictive power are discussed.
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