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Development of magnetic rotation in light Gd nuclei; study of 142Gd

  • R.M. Lieder
  • T. Rzaca-Urban
  • H. Brands
  • W. Gast
  • H.M. Jäger
  • L. Mihailescu
  • Z. Marcinkowska
  • W. Urban
  • T. Morek
  • Ch. Droste
  • P. Szymański
  • S. Chmel
  • D. Bazzacco
  • G. Falconi
  • R. Menegazzo
  • S. Lunardi
  • C. Rossi Alvarez
  • G. de Angelis
  • E. Farnea
  • A. Gadea
  • D.R. Napoli
  • Z. Podolyak
  • Ts. Venkova
  • R. Wyss

Abstract:

High-spin states in 142Gd have been populated by means of the 99Ru(48Ti, 2p3n) reaction at 240 MeV and investigated with the γ-spectrometer EUROBALL III and the charged-particle detector array ISIS. The features of four dipole bands have been determined and compared with tilted-axis cranking model calculations indicating that they are magnetic rotational bands. A transition from regular to irregular bands has been found approaching N = 82 demonstrating that this is a general phenomenon in nuclei near a double-shell closure.

PACS. 21.10.Re Collective levels – 21.60.Ev Collective models – 23.20.En Angular distribution and correlation measurements – 27.60.+j 90 ?A? 149 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2002

Authors and Affiliations

  • R.M. Lieder
    • 1
  • T. Rzaca-Urban
    • 2
  • H. Brands
    • 1
  • W. Gast
    • 1
  • H.M. Jäger
    • 1
  • L. Mihailescu
    • 1
  • Z. Marcinkowska
    • 2
  • W. Urban
    • 2
  • T. Morek
    • 2
  • Ch. Droste
    • 2
  • P. Szymański
    • 2
  • S. Chmel
    • 3
  • D. Bazzacco
    • 4
  • G. Falconi
    • 4
  • R. Menegazzo
    • 4
  • S. Lunardi
    • 4
  • C. Rossi Alvarez
    • 4
  • G. de Angelis
    • 5
  • E. Farnea
    • 5
  • A. Gadea
    • 5
  • D.R. Napoli
    • 5
  • Z. Podolyak
    • 5
  • Ts. Venkova
    • 6
  • R. Wyss
    • 7
  1. 1.Institut für Kernphysik, Forschungszentrum Jülich, D-52425 Jülich, GermanyDE
  2. 2.Institute of Experimental Physics, University of Warsaw, PL-00-681 Warszawa, PolandPL
  3. 3.Institut für Strahlen- und Kernphysik, University of Bonn, D-53115 BonnDE
  4. 4.Dipartimento di Fisica dell'Università and Istituto Nazionale di Fisica Nucleare, Sezione di Padova, I-35131 Padova, ItalyIT
  5. 5.Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Legnaro, I-35020 Legnaro, ItalyIT
  6. 6.Institute of Nuclear Research and Nuclear Energy, Bulgarian Academy of Sciences, BG-1784 Sofia, BulgariaBG
  7. 7.Royal Institute of Technology, Physics Department Frescati, S-10405 Stockholm, SwedenSE

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