1
|
Rosenbusch M, Ascher P, Atanasov D, Barbieri C, Beck D, Blaum K, Borgmann C, Breitenfeldt M, Cakirli RB, Cipollone A, George S, Herfurth F, Kowalska M, Kreim S, Lunney D, Manea V, Navrátil P, Neidherr D, Schweikhard L, Somà V, Stanja J, Wienholtz F, Wolf RN, Zuber K. Probing the N=32 Shell Closure below the Magic Proton Number Z=20: Mass Measurements of the Exotic Isotopes ^{52,53}K. Phys Rev Lett 2015; 114:202501. [PMID: 26047224 DOI: 10.1103/physrevlett.114.202501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Indexed: 06/04/2023]
Abstract
The recently confirmed neutron-shell closure at N=32 has been investigated for the first time below the magic proton number Z=20 with mass measurements of the exotic isotopes (52,53)K, the latter being the shortest-lived nuclide investigated at the online mass spectrometer ISOLTRAP. The resulting two-neutron separation energies reveal a 3 MeV shell gap at N=32, slightly lower than for 52Ca, highlighting the doubly magic nature of this nuclide. Skyrme-Hartree-Fock-Bogoliubov and ab initio Gorkov-Green function calculations are challenged by the new measurements but reproduce qualitatively the observed shell effect.
Collapse
Affiliation(s)
- M Rosenbusch
- Institut für Physik, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - P Ascher
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - D Atanasov
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - C Barbieri
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - D Beck
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Ch Borgmann
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - M Breitenfeldt
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Celestijnenlaan 200d, B-3001 Heverlee, Belgium
| | - R B Cakirli
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- Department of Physics, University of Istanbul, 34134 Istanbul, Turkey
| | - A Cipollone
- Department of Physics, University of Surrey, Guildford GU2 7XH, United Kingdom
| | - S George
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - F Herfurth
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | | | - S Kreim
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
- CERN, 1211 Geneva 23, Switzerland
| | - D Lunney
- CSNSM-IN2P3-CNRS, Université Paris-Sud, 91405 Orsay, France
| | - V Manea
- CSNSM-IN2P3-CNRS, Université Paris-Sud, 91405 Orsay, France
| | - P Navrátil
- TRIUMF, 4004 Westbrook Mall, Vancouver, British Columbia V6T 2A3, Canada
| | - D Neidherr
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - L Schweikhard
- Institut für Physik, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - V Somà
- CEA-Saclay, IRFU/Service de Physique Nucléaire, 91191 Gif-sur-Yvette, France
- Institut für Kernphysik, Technische Universität Darmstadt, 64289 Darmstadt, Germany
- ExtreMe Matter Institute EMMI, GSI Helmholtzzentrum für Schwerionenforschung GmbH, 64291 Darmstadt, Germany
| | - J Stanja
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - F Wienholtz
- Institut für Physik, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - R N Wolf
- Institut für Physik, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - K Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| |
Collapse
|
2
|
Wienholtz F, Beck D, Blaum K, Borgmann C, Breitenfeldt M, Cakirli RB, George S, Herfurth F, Holt JD, Kowalska M, Kreim S, Lunney D, Manea V, Menéndez J, Neidherr D, Rosenbusch M, Schweikhard L, Schwenk A, Simonis J, Stanja J, Wolf RN, Zuber K. Erratum: Masses of exotic calcium isotopes pin down nuclear forces. Nature 2013. [DOI: 10.1038/nature12431] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
3
|
Wolf RN, Beck D, Blaum K, Böhm C, Borgmann C, Breitenfeldt M, Chamel N, Goriely S, Herfurth F, Kowalska M, Kreim S, Lunney D, Manea V, Minaya Ramirez E, Naimi S, Neidherr D, Rosenbusch M, Schweikhard L, Stanja J, Wienholtz F, Zuber K. Plumbing neutron stars to new depths with the binding energy of the exotic nuclide 82Zn. Phys Rev Lett 2013; 110:041101. [PMID: 25166148 DOI: 10.1103/physrevlett.110.041101] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2012] [Indexed: 06/03/2023]
Abstract
Modeling the composition of neutron-star crusts depends strongly on binding energies of neutron-rich nuclides near the N = 50 and N = 82 shell closures. Using a recent development of time-of-flight mass spectrometry for on-line purification of radioactive ion beams to access more exotic species, we have determined for the first time the mass of (82)Zn with the ISOLTRAP setup at the ISOLDE-CERN facility. With a robust neutron-star model based on nuclear energy-density-functional theory, we solve the general relativistic Tolman-Oppenheimer-Volkoff equations and calculate the neutron-star crust composition based on the new experimental mass. The composition profile is not only altered but now constrained by experimental data deeper into the crust than before.
Collapse
Affiliation(s)
- R N Wolf
- Institut für Physik, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - D Beck
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | - K Blaum
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Ch Böhm
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - Ch Borgmann
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - M Breitenfeldt
- Instituut voor Kern- en Stralingsfysica, KU Leuven, Celestijnenlaan 200d, B-3001 Heverlee, Belgium
| | - N Chamel
- Institut d'Astronomie et d'Astrophysique, CP-226, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - S Goriely
- Institut d'Astronomie et d'Astrophysique, CP-226, Université Libre de Bruxelles, 1050 Brussels, Belgium
| | - F Herfurth
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany
| | | | - S Kreim
- Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany and CERN, 1211 Geneva 23, Switzerland
| | - D Lunney
- CSNSM-IN2P3-CNRS, Université Paris-Sud, 91405 Orsay, France
| | - V Manea
- CSNSM-IN2P3-CNRS, Université Paris-Sud, 91405 Orsay, France
| | - E Minaya Ramirez
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany and Helmholtz-Institut Mainz, 55099 Mainz, Germany
| | - S Naimi
- CSNSM-IN2P3-CNRS, Université Paris-Sud, 91405 Orsay, France and RIKEN Nishina Center for Accelerator-based Science, RIKEN, 2-1 Hirosawa, Wako-shi, Saitama 351-0198, Japan
| | - D Neidherr
- GSI Helmholtzzentrum für Schwerionenforschung GmbH, Planckstraße 1, 64291 Darmstadt, Germany and Max-Planck-Institut für Kernphysik, Saupfercheckweg 1, 69117 Heidelberg, Germany
| | - M Rosenbusch
- Institut für Physik, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - L Schweikhard
- Institut für Physik, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - J Stanja
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| | - F Wienholtz
- Institut für Physik, Ernst-Moritz-Arndt Universität Greifswald, 17487 Greifswald, Germany
| | - K Zuber
- Institut für Kern- und Teilchenphysik, Technische Universität Dresden, 01069 Dresden, Germany
| |
Collapse
|
4
|
Fink D, Barea J, Beck D, Blaum K, Böhm C, Borgmann C, Breitenfeldt M, Herfurth F, Herlert A, Kotila J, Kowalska M, Kreim S, Lunney D, Naimi S, Rosenbusch M, Schwarz S, Schweikhard L, Simkovic F, Stanja J, Zuber K. Q value and half-lives for the double-β-decay nuclide 110Pd. Phys Rev Lett 2012; 108:062502. [PMID: 22401059 DOI: 10.1103/physrevlett.108.062502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2011] [Revised: 01/17/2012] [Indexed: 05/31/2023]
Abstract
The 110Pd double-β decay Q value was measured with the Penning-trap mass spectrometer ISOLTRAP to be Q=2017.85(64) keV. This value shifted by 14 keV compared with the literature value and is 17 times more precise, resulting in new phase-space factors for the two-neutrino and neutrinoless decay modes. In addition a new set of the relevant matrix elements has been calculated. The expected half-life of the two-neutrino mode was reevaluated as 1.5(6)×10(20) yr. With its high natural abundance, the new results reveal 110Pd to be an excellent candidate for double-β decay studies.
Collapse
Affiliation(s)
- D Fink
- Max-Planck-Institut für Kernphysik, Heidelberg, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|