A New us Isomer in 136Sb Produced in the Projectile Fission of 238U

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The neutron-rich isotope Sb-136 has been produced following the relativistic projectile fission of U-238 in an experiment performed at the Fragment Separator at GSI, Darmstadt. Delayed gamma -ray spectroscopy of the fission products has been performed after isotope separation. A new isomeric state in Sb-136 has been populated, and its lifetime measured as T-1/2 = 565(50) ns. Realistic and empirical shell-model calculations have been performed and are compared to the experimental observables.


  • Milena Mineva
  • M. Bernas
  • J. Gerl
  • H. Grawe
  • M. Pfutzner
  • P. H. Regan
  • M. Rejmund
  • F. Becker
  • C. R. Bingham
  • T. Enqvist
  • B. Fogelberg
  • H. Gausemel
  • H. Geissel
  • J. Genevey
  • M. Gorska
  • R. Grzywacz
  • K. Hauschild
  • Z. Janas
  • I. Kojouharov
  • Y. Kopatch
  • A. Korgul
  • W. Korten
  • J. Kurcewicz
  • M. Lewitowicz
  • R. Lucas
  • H. Mach
  • S. Mandal
  • P. Mayet
  • C. Mazzocchi
  • J. A. Pinston
  • Z. Podolyak
  • H. Schaffner
  • C. Schlegel
  • K. Schmidt
  • K. Summerer
  • H. J. Wollersheim
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Pages (from-to)9-13
JournalEuropean Physical Journal A. Hadrons and Nuclei
Publication statusPublished - 2001
Publication categoryResearch

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