Nuclear Structure "Southeast" of 208Pb: Isomeric states in 208Hg and 209Tl

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Abstract

The nuclear structure of neutron-rich N>126 nuclei has been investigated following their production via relativistic projectile fragmentation of a E/A=1 GeV U-238 beam. Metastable states in the N=128 isotones Hg-208 and Tl-209 have been identified. Delayed gamma-ray transitions are interpreted as arising from the decay of I-pi=(8(+)) and (17/2(+)) isomers, respectively. The data allow for the so far most comprehensive verification of the shell-model approach in the region determined by magic numbers Z < 82 and N>126.

Details

Authors
  • N. Al-Dahan
  • Zs. Podolyak
  • P. H. Regan
  • M. Gorska
  • H. Grawe
  • K. H. Maier
  • J. Gerl
  • S. B. Pietri
  • H. J. Wollersheim
  • N. Alkhomashi
  • A. Y. Deo
  • A. M. Denis Bacelar
  • G. Farrelly
  • S. J. Steer
  • A. M. Bruce
  • P. Boutachkov
  • C. Domingo-Pardo
  • A. Algora
  • J. Benlliure
  • A. Bracco
  • E. Calore
  • E. Casarejos
  • I. J. Cullen
  • P. Detistov
  • Zs. Dombradi
  • M. Doncel
  • F. Farinon
  • W. Gelletly
  • H. Geissel
  • N. Goel
  • J. Grebosz
  • Robert Hoischen
  • I. Kojouharov
  • N. Kurz
  • S. Lalkovski
  • S. Leoni
  • F. Molina
  • D. Montanari
  • A. I. Morales
  • A. Musumarra
  • D. R. Napoli
  • R. Nicolini
  • C. Nociforo
  • A. Prochazka
  • W. Prokopowicz
  • B. Rubio
  • H. Schaffner
  • P. Strmen
  • I. Szarka
  • T. Swan
  • J. S. Thomas
  • J. J. Valiente-Dobon
  • S. Verma
  • P. M. Walker
  • H. Weick
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics
Original languageEnglish
Article number061302(R)
JournalPhysical Review C (Nuclear Physics)
Volume80
Issue number6
Publication statusPublished - 2009
Publication categoryResearch
Peer-reviewedYes