25-29 January 2016
Bormio, Italy
Europe/Berlin timezone

Precision mass measurements of neutron-rich cadmium for r-process studies

27 Jan 2016, 17:25
20m
Bormio, Italy

Bormio, Italy

Short Contribution Nuclear Structure and Astrophysics Wednesday Afternoon

Speaker

Dinko Atanasov (Max-Planck Institute for Nuclear Physics)

Description

The rapid neutron capture process (r-process) is believed to be responsible for the creation of a big portion of the elements heavier than iron. The path of the r-process proceeds in a region of the chart of nuclides where no or little experimental information is available. While astrophysical scenarios are available, they are all require significant experimental input from nuclear physics. Relevant experimental quantities constraining r-process calculations include binding energies, half-lives, neutron capture cross section, most of which are only provided through theoretical extrapolations. It is thus a long-standing experimental goal to identify and measure the properties of nuclides which are thought to contribute the most to the observed r-process abundances. An important region of interest is the A $\approx$ 130 abundance peak, associated to the classical waiting-point nucleus $^{130}$Cd. The Penning-trap mass spectrometer ISOLTRAP, situated at ISOLDE/CERN, is primarily dedicated to precision mass measurements of radioactive isotopes, from which their binding energies can be determined. In a recent experiment, ISOLTRAP measured the masses of the neutron-rich $^{129-131}$Cd isotopes. In this contribution the current ISOLTRAP setup will be presented as well as the techniques employed for mass measurements of cadmium isotopes. Furthermore we will discuss the impact of the measured masses on nuclear astrophysics.

Primary author

Dinko Atanasov (Max-Planck Institute for Nuclear Physics)

Co-authors

Andree Welker (Technische Universit\"{a}t Dresden, Dresden, Germany) David Lunney (CSNSM-IN2P3-CNRS, Universit\'{e} Paris-Sud, Orsay, France) Dennis Neidherr (GSI Helmholtzzentrum f\"{u}r Schwerionenforschung GmbH, Darmstadt, Germany) Dimitry Kissler (Max-Planck Institute for Nuclear Physics) Frank Herfurt (GSI Helmholtzzentrum f\"{u}r Schwerionenforschung GmbH, Darmstadt, Germany) Frank Wienholtz (Ernst-Moritz-Arndt-Universit\"{a}t, Institut f\"{u}r Physik, Greifswald, Germany) Kai Zuber (Technische Universit\"{a}t Dresden, Dresden, Germany) Klaus Blaum (Max-Planck Institute for Nuclear Physics, Heidelberg, Germany) Lutz Schwaikhard (Ernst-Moritz-Arndt-Universit\"{a}t, Institut f\"{u}r Physik, Greifswald, Germany) Magdalena Kowalska (CERN, Geneva, Switzerland) Marco Rosenbusch (Ernst-Moritz-Arndt-Universit\"{a}t, Institut f\"{u}r Physik, Greifswald, Germany) Pauline Ascher (CEN Bordeaux-Gradignan, Bordeaux, France) Rabia Burcu Cakirli (Department of Physics, University of Istanbul, Istanbul, Turkey) Robert Wolf (Max-Planck Institute for Nuclear Physics) Sebastian George (Max-Planck Institute for Nuclear Physics, Heidelberg, Germany) Susanne Kreim (Max-Planck Institute for Nuclear Physics, Heidelberg, Germany) Thomas Elias Cocolius (Instituut voor Kernen Stralingsfysica, Leuven, Belgium) Vladimir Manea (Max-Planck Institute for Nuclear Physics) Yuri Litvinov (GSI Helmholtzzentrum f\"{u}r Schwerionenforschung GmbH, Darmstadt, Germany)

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