Abstract
Half-lives and β-delayed neutron emission probabilities of several isotopes of Au, Hg, Tl, Pb and Bi, in the neutron-rich region around and beyond N=126, were determined in an experiment performed at the RIB facility of GSI [1]. These are decay properties that are directly related to the final abundance distribution of the elements due to their contribution during the freeze-out of the r-process nucleosynthesis. This contribution summarizes the main aspects of the analysis methodology followed for the determination of β-decay half-lives. The main particularities of the present analysis concern the characterization of the β-background, as well as the effect of the pulsed-beam in the ion-β time correlations.
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