Speaker
Dr
Mark Bissell
(Inst. voor Kern- en Stralingsfysica-Katholieke Universiteit Leuven, B-3001 Leuven, Belgium)
Description
As a probe of nuclear ground-state properties, laser spectroscopy remains unrivalled in its ability to simultaneously shed light on multiple observables. The nuclear spin, magnetic-dipole, electric-quadrupole and Seltzer moments may all be obtained with complete nuclear model independence. Undoubtedly, such observables constitute keen tests of our understanding of nuclear structure.
This technique has been brought to bear on the isotopic chain of Cu in order to address three questions of considerable contemporary interest: Does the monopole migration of the π1f5/2 orbital result in an inversion of ground-state spins by 75Cu? Is the N = 28 shell closure significantly weakened in the region of the Z = 28 shell closure? Additionally, does 72Cu have a ground-state spin of Iπ = ( 2+), as indicated by β-decay spectroscopy, but in direct contradiction to both shell-model calculations and in-source atomic spectroscopy?
The measurements of the hyperfine structures of the neutron rich Cu isotopes have now been performed. These results have provided unequivocal evidence for the spin inversion at 75Cu and a ground state with I π = 2(-) in 72Cu. Such conclusions will be reviewed and the implications examined.
Preparations have now begun for the continuation of this experimental campaign towards the neutron deficient isotopes, addressing the issue of the N = 28 shell closure. The challenges and anticipated outcomes of this work will be considered.
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| Is this an invited talk? (please answer yes or no) | no |
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Author
Dr
Mark Bissell
(Inst. voor Kern- en Stralingsfysica-Katholieke Universiteit Leuven, B-3001 Leuven, Belgium)
Co-authors
Mr
Andreas Krieger
(Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany)
Dr
Bradley Cheal
(School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, United Kingdom)
Dr
Christopher Geppert
(Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany)
Dr
Dave Forest
(School of Physics and Astronomy, The University of Birmingham, Birmingham, B15 2TT, United Kingdom)
Dr
Deyan Yordanov
(CERN European Organization for Nuclear Research, Physics Department, CH-1211 Geneva 23, Switzerland)
Dr
Garry Tungate
(School of Physics and Astronomy, The University of Birmingham, Birmingham, B15 2TT, United Kingdom)
Prof.
Gerda Neyens
(Inst. voor Kern- en Stralingsfysica-Katholieke Universiteit Leuven, B-3001 Leuven, Belgium)
Prof.
Henry Stroke
(Department of Physics, New York University, New York, New York 10003, USA)
Prof.
Jon Billowes
(School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, United Kingdom)
Mr
Jorg Krämer
(Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany)
Dr
Kieran Flanagan
(School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, United Kingdom)
Prof.
Klaus Blaum
(Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany)
Dr
Magda Kowalska
(Max-Planck-Institut für Kernphysik, D-69117 Heidelberg, Germany)
Dr
Marieke De Rydt
(Inst. voor Kern- en Stralingsfysica-Katholieke Universiteit Leuven, B-3001 Leuven, Belgium)
Dr
Paul Campbell
(School of Physics and Astronomy, The University of Manchester, Manchester, M13 9PL, United Kingdom)
Prof.
Peter Lievens
(Laboratorium voor Vaste-Stoffysica en Magnetisme, Katholieke Universiteit Leuven,B-3001 Leuven, Belgium)
Mr
Pieter Vingerhoets
(Inst. voor Kern- en Stralingsfysica-Katholieke Universiteit Leuven,B-3001 Leuven, Belgium)
Prof.
Rainer Neugart
(Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany)
Prof.
Wilfried Nörtershäuser
(Institut für Kernchemie, Johannes Gutenberg-Universität Mainz, D-55099 Mainz, Germany)
