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Atanasov, D; Ascher, P; Blaum, K; Cakirli, R B; Cocolios, T E; George, S; Goriely, S; Herfurth, F; Janka, H-T; Just, O
Physical review letters, 12/2015, Letnik: 115, Številka: 23Journal Article
Masses adjacent to the classical waiting-point nuclide Cd130 have been measured by using the Penning-trap spectrometer ISOLTRAP at ISOLDE/CERN. We find a significant deviation of over 400 keV from earlier values evaluated by using nuclear beta-decay data. The new measurements show the reduction of the N=82 shell gap below the doubly magic Sn132. The nucleosynthesis associated with the ejected wind from type-II supernovae as well as from compact object binary mergers is studied, by using state-of-the-art hydrodynamic simulations. We find a consistent and direct impact of the newly measured masses on the calculated abundances in the A=128-132 region and a reduction of the uncertainties from the precision mass input data.
