Manuel J. Gutiérrez
(GSI Darmstadt / HIM Mainz)
Quantum shell effects stabilize heavy nuclei against spontaneous fission, making the existence of superheavy elements possible. Direct mass measurements performed with Penning traps provide information on the nuclear shell structure via binding energies, as well as excitation energies of low-lying, long-lived isomers obtained from the directly measured masses.
The SHIPTRAP experiment is devoted to the study of heavy and superheavy nuclei produced via fusion-evaporation reactions at rates well below one particle per hour. Thanks to the Phase-Imaging Ion-Cyclotron-Resonance technique, the resolving power has been increased beyond 107, bringing many low-lying isomeric states within reach for mass spectrometry. In this contribution the latest results, obtained as part of the FAIR Phase-0 campaign, will be discussed. These encompass ground-state masses and isomeric-state-energy measurements of several nuclides, ranging from 241Cf to 258Db. The alpha-decay chain 206Fr-202At-198Bi was also studied, with the aim to pin down the excitation energies of several isomers for the first time.
Manuel J. Gutiérrez
(GSI Darmstadt / HIM Mainz)
Dr
Alexander Yakushev
(GSI Darmstadt / HIM Mainz)
Andrew Mistry
(GSI Helmholtzzentrum für Schwerionenforschung GmbH)
Brankica Anđelić
(University of Groningen & Helmholtz Institut Mainz)
Christoph E. Düllmann
(Johannes Gutenberg University Mainz, 55099 Mainz, Germany, Helmholtz Institute Mainz, 55099 Mainz, Germany, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany)
Prof.
Daniel Rodríguez
(Universidad de Granada)
Dr
Dennis Neidherr
(GSI Darmstadt)
Dr
Elisabeth Rickert
(GSI Darmstadt / HIM Mainz / JGU Mainz)
Mme
Elodie Morin
(IJC Lab)
Dr
Enrique Minaya Ramirez
(IJCLab)
Francesca Giacoppo
(GSI Helmholtzzentrum für Schwerionenforschung GmbH)
Dr
Fritz-Peter Heßberger
(GSI Darmstadt / HIM Mainz)
Mlle
Jessica Warbinek
(GSI Helmholtz Centre)
M.
Joaquín Berrocal
(Universidad de Granada)
Julia Even
(University of Groningen)
Klaus Blaum
(MPIK)
M.
Lennart Blaauw
(University of Groningen)
Mlle
Luisa Arcila González
(University of Groningen)
Lutz Schweikhard
(University Greifswald)
Michael Block
(GSI/HIM/JGU)
Nasser Kalantar-Nayestanaki
(ESRIG, University of Groningen, Groningen, The Netherlands)
Dr
Oliver Kaleja
(GSI Darmstadt / MPIK / JGU Mainz / University of Greifswald)
Peter Thirolf
(Ludwig-Maximilians-University Munich)
Pierre Chauveau
(GANIL)
Sebastian Raeder
(GSI Darmstadt)
Dr
Stanislav Chenmarev
(MPIK)
M.
Steffen Lohse
(GSI Darmstadt / HIM Mainz / JGU Mainz)
M.
Steven Nothhelfer
(HIM / GSI)
