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Nuclear Experiment

arXiv:1512.05676 (nucl-ex)
[Submitted on 17 Dec 2015]

Title:Precision Mass Measurements of 129-131Cd and Their Impact on Stellar Nucleosynthesis via the Rapid Neutron Capture Process

Authors:D. Atanasov, P. Ascher, K. Blaum, R. B. Cakirli, T. E. Cocolios, S. George, F. Herfurth, D. Kisler, M. Kowalska, S. Kreim, Yu. A. Litvinov, D. Lunney, V. Manea, D. Neidherr, M. Rosenbusch, L. Schweikhard, A. Welker, F. Wienholtz, R. N. Wolf, K. Zuber
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Abstract:Masses adjacent to the classical waiting-point nuclide 130Cd 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 132Sn. 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.
Subjects: Nuclear Experiment (nucl-ex)
Cite as: arXiv:1512.05676 [nucl-ex]
  (or arXiv:1512.05676v1 [nucl-ex] for this version)
  https://doi.org/10.48550/arXiv.1512.05676
Journal reference: Phys. Rev. Lett. 115, 232501 (2015)
Related DOI: https://doi.org/10.1103/PhysRevLett.115.232501

Submission history

From: Dinko Atanasov Da [view email]
[v1] Thu, 17 Dec 2015 17:20:59 UTC (545 KB)
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