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Beta-decay half-lives of new neutron-rich isotopes of Re, Os and Ir approaching the r-process path near N = 126

  • T. Kurtukian-NietoEmail author
  • J. Benlliure
  • K. -H. Schmidt
  • L. Audouin
  • F. Becker
  • B. Blank
  • I. N. Borzov
  • E. Casarejos
  • F. Farget
  • M. Fernández-Ordóñez
  • J. Giovinazzo
  • D. Henzlova
  • B. Jurado
  • K. Langanke
  • G. Martínez-Pinedo
  • J. Pereira
  • O. Yordanov
Regular Article - Experimental Physics

Abstract

Heavy neutron-rich nuclei close to N = 126 were produced by fragmentation of a 1A GeV 208Pb beam at the FRS at GSI. The β-decay half-lives of 7 nuclides have been determined using a novel numerical analysis method. The half-lives of 202,199Ir, 200,199Os and 196Re are reported for the first time. The comparison of the data with model calculations provides indications on the importance of first-forbidden transitions on the β-decay of nuclei around N = 126 and Z < 82.

Keywords

Forward Time Magic Neutron Number Narrow Range Distribution QRPA Approach FRDM Model 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© SIF, Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • T. Kurtukian-Nieto
    • 1
    Email author
  • J. Benlliure
    • 1
  • K. -H. Schmidt
    • 2
  • L. Audouin
    • 3
  • F. Becker
    • 2
  • B. Blank
    • 4
  • I. N. Borzov
    • 2
  • E. Casarejos
    • 1
  • F. Farget
    • 5
  • M. Fernández-Ordóñez
    • 1
  • J. Giovinazzo
    • 4
  • D. Henzlova
    • 2
  • B. Jurado
    • 4
  • K. Langanke
    • 2
    • 6
  • G. Martínez-Pinedo
    • 2
    • 6
  • J. Pereira
    • 1
  • O. Yordanov
    • 2
  1. 1.Departamento de Física de PartículasUniversidade de Santiago de CompostelaSantiago de CompostelaSpain
  2. 2.GSI-Helmholtzzentrum für Schwerionenforschung GmbHDarmstadtGermany
  3. 3.Institut de Physique NucléaireOrsayFrance
  4. 4.Centre d’Etudes Nucléaires de Bordeaux-GradignanCNRS/IN2P3-Université de BordeauxGradignanFrance
  5. 5.GANILCAEN Cedex 5France
  6. 6.Institut für KernphysikTU DarmstadtDarmstadtGermany

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