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Study of isomeric states in 198,200,202,206 Pb and 206 Hg populated in fragmentation reactions

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Author(s)

  • The Agata Collaboration
  • N. Lalović
  • D. Rudolph
  • Zs Podolyák
  • L. G. Sarmiento
  • T. Alexander
  • M. L. Cortés
  • J. Gerl
  • P. Golubev
  • F. Ameil
  • T. Arici
  • Ch Bauer
  • D. Bazzacco
  • P. Boutachkov
  • M. Bowry
  • C. Fahlander
  • A. Gadea
  • J. Gellanki
  • A. Givechev
  • N. Goel
  • M. Górska
  • A. Gottardo
  • E. Gregor
  • G. Guastalla
  • T. Habermann
  • M. Hackstein
  • A. Jungclaus
  • I. Kojouharov
  • R. Kumar
  • N. Kurz
  • M. Lettmann
  • C. Lizarazo
  • C. Louchart
  • E. Merchán
  • C. Michelagnoli
  • Th Moeller
  • K. Moschner
  • Z. Patel
  • N. Pietralla
  • S. Pietri
  • D. Ralet
  • M. Reese
  • P. H. Regan
  • P. Reiter
  • H. Schaffner
  • P. Singh
  • C. Stahl
  • R. Stegmann
  • O. Stezowski
  • J. Taprogge
  • P. Thöle
  • A. Wendt
  • O. Wieland
  • E. Wilson
  • R. Wood
  • H. J. Wollersheim
  • B. Birkenbach
  • B. Bruyneel
  • I. Burrows
  • E. Clément
  • P. Désesquelles
  • C. Domingo-Pardo
  • J. Eberth
  • V. González
  • H. Hess
  • J. Jolie
  • D. S. Judson
  • R. Menegazzo
  • D. Mengoni
  • D. R. Napoli
  • A. Pullia
  • B. Quintana
  • G. Rainovski
  • M. D. Salsac
  • E. Sanchis
  • J. Simpson
  • J. J.Valiente Dóbon

Department/unit(s)

Publication details

JournalJournal of Physics G: Nuclear and Particle Physics
DateAccepted/In press - 23 Jan 2018
DatePublished (current) - 12 Feb 2018
Issue number3
Volume45
Original languageEnglish

Abstract

Isomeric states in isotopes in the vicinity of doubly-magic 208 Pb were populated following reactions of a relativistic 208 Pb primary beam impinging on a 9 Be fragmentation target. Secondary beams of 198,200,202,206 Pb and 206 Hg were isotopically separated and implanted in a passive stopper positioned in the focal plane of the GSI Fragment Separator. Delayed γ rays were detected with the Advanced Gamma Tracking Array (AGATA). Decay schemes were re-evaluated and interpreted with shell-model calculations. The momentum-dependent population of isomeric states in the two-nucleon hole nuclei 206 Pb/ 206 Hg was found to differ from the population of multi neutron-hole isomeric states in 198,200,202 Pb.

Bibliographical note

© 2018 IOP Publishing Ltd. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy.

    Research areas

  • γ-ray spectroscopy, relativistic projectile fragmentation, direct reactions, isomeric decays, electromagnetic transitions, nuclear shell model

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