title: (97)(37)Rb(60): The Cornerstone of the Region of Deformation around A ∼ 100 [corrected].
abstract: Excited states of the neutron-rich nuclei (97,99)Rb were populated for the first time using the multistep Coulomb excitation of radioactive beams. Comparisons of the results with particle-rotor model calculations provide clear identification for the ground-state rotational band of (97)Rb as being built on the πg(9/2) [431] 3/2(+) Nilsson-model configuration. The ground-state excitation spectra of the Rb isotopes show a marked distinction between single-particle-like structures below N=60 and rotational bands above. The present study defines the limits of the deformed region around A∼100 and indicates that the deformation of (97)Rb is essentially the same as that observed well inside the deformed region. It further highlights the power of the Coulomb-excitation technique for obtaining spectroscopic information far from stability. The (99)Rb case demonstrates the challenges of studies with very short-lived postaccelerated radioactive beams.
authors.affiliation: CSNSM, CNRS/IN2P3, Université Paris-Sud, UMR8609, F-91405 ORSAY-Campus, France.|KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium.
authors.forename: C
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authors.affiliation: Heavy Ion Laboratory, University of Warsaw, 02-093 Warsaw, Poland.|IRFU/SPhN, CEA Saclay, F-91191 Gif-sur-Yvette, France.
authors.forename: M
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authors.lastname: Zielińska
authors.affiliation: CSNSM, CNRS/IN2P3, Université Paris-Sud, UMR8609, F-91405 ORSAY-Campus, France.
authors.forename: G
authors.initials: G
authors.lastname: Georgiev
authors.affiliation: ELI-NP, IFIN-HH, 30 Reactorului Street, 077125 Bucharest, Mǎgurele, Romania.
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authors.initials: DL
authors.lastname: Balabanski
authors.affiliation: Department of Nuclear Physics, RSPE, Australian National University, Canberra, Australian Capital Territory 2601, Australia.
authors.forename: A E
authors.initials: AE
authors.lastname: Stuchbery
authors.affiliation: Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany.
authors.forename: A
authors.initials: A
authors.lastname: Blazhev
authors.affiliation: KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium.
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authors.lastname: Bree
authors.affiliation: CEA, DAM, DIF, F-91297 Arpajon cedex, France.
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authors.lastname: Chevrier
authors.affiliation: Dipartimento di Fisica, Universitá di Camerino, I-62032 Camerino, Italy and Istituto Nazionale di Fisica Nucleare, Sezione di Perugia, I-06123 Perugia, Italy.
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authors.affiliation: CEA, DAM, DIF, F-91297 Arpajon cedex, France.
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authors.initials: JM
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authors.affiliation: Department of Physics and Astronomy, University of Edinburgh, Edinburgh EH9 3JZ, United Kingdom.
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authors.affiliation: KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium.
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authors.lastname: De Witte
authors.affiliation: KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium.|Belgian Nuclear Research Centre SCK·CEN, Boeretang 200, B-2400 Mol, Belgium.
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authors.lastname: Diriken
authors.affiliation: KU Leuven, Instituut voor Kern- en Stralingsfysica, 3001 Leuven, Belgium.|Oliver Lodge Laboratory, University of Liverpool, Liverpool L69 7ZE, United Kingdom.
authors.forename: L P
authors.initials: LP
authors.lastname: Gaffney
authors.affiliation: Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany.
authors.forename: K
authors.initials: K
authors.lastname: Geibel
authors.affiliation: Heavy Ion Laboratory, University of Warsaw, 02-093 Warsaw, Poland.
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authors.lastname: Hadyńska-Klȩk
authors.affiliation: Nuclear Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: F G
authors.initials: FG
authors.lastname: Kondev
authors.affiliation: ISOLDE, CERN, CH-1211 Geneva 23, Switzerland.|Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland.|Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland.
authors.forename: J
authors.initials: J
authors.lastname: Konki
authors.affiliation: Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany.
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authors.lastname: Kröll
authors.affiliation: CEA, DAM, DIF, F-91297 Arpajon cedex, France.
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authors.lastname: Morel
authors.affiliation: Heavy Ion Laboratory, University of Warsaw, 02-093 Warsaw, Poland.
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authors.lastname: Napiorkowski
authors.affiliation: ISOLDE, CERN, CH-1211 Geneva 23, Switzerland.|Department of Physics, University of Jyväskylä, P.O. Box 35, FI-40014 University of Jyväskylä, Finland.|Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, FI-00014 Helsinki, Finland.
authors.forename: J
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authors.lastname: Pakarinen
authors.affiliation: Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany.
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authors.affiliation: Institut für Kernphysik, Technische Universität Darmstadt, D-64289 Darmstadt, Germany.
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authors.affiliation: Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany.
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authors.affiliation: Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany.
authors.forename: B
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authors.lastname: Siebeck
authors.affiliation: LPSC, CNRS/IN2P3, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, INPG, F-38026 Grenoble Cedex, France.
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authors.affiliation: ISOLDE, CERN, CH-1211 Geneva 23, Switzerland.
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authors.affiliation: Institute for Nuclear Physics, University of Cologne, Zülpicher Straße 77, D-50937 Cologne, Germany.
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authors.affiliation: ISOLDE, CERN, CH-1211 Geneva 23, Switzerland.
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