Multi-quasiparticle states in 184 W via multi-nucleon transfer

  • C. Wheldon
  • J. J. Valiente-Dobón
  • P. H. Regan
  • C. J. Pearson
  • C. Y. Wu
  • J. F. Smith
  • A. O. Macchiavelli
  • D. Cline
  • R. S. Chakrawarthy
  • R. Chapman
  • M. Cromaz
  • P. Fallon
  • S. J. Freeman
  • A. Görgen
  • W. Gelletly
  • A. Hayes
  • H. Hua
  • S. D. Langdown
  • I. Y. Lee
  • X. Liang
  • Zs. Podolyák
  • G. Sletten
  • R. Teng
  • D. Ward
  • D. D. Warner
  • A. D. Yamamoto
Letter

Abstract.

A multi-nucleon transfer reaction using an 850 MeV 136Xe beam incident on a 198Pt target was used to populate high-spin states in 184W, 14 nucleons from the target. A 4-quasiparticle isomer with \(t_{1/2} = 188 \pm 38\) ns has been observed for the first time and its de-excitation through collective and intrinsic structures studied. The results are compared with predictions of blocked BCS Nilsson calculations. Observation of this metastable state completes the tungsten 4-quasiparticle isomer systematics from A = 176 to 186. Mapping out the most yrast 4-quasiparticle isomers in these even-even tungsten isotopes suggests the existence of a highly favoured state in 188W, within reach of current experimental set-ups.

Keywords

Tungsten Favoured State Transfer Reaction Metastable State Beam Incident 

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2004

Authors and Affiliations

  • C. Wheldon
    • 1
    • 2
  • J. J. Valiente-Dobón
    • 1
  • P. H. Regan
    • 1
    • 3
  • C. J. Pearson
    • 1
  • C. Y. Wu
    • 4
  • J. F. Smith
    • 5
  • A. O. Macchiavelli
    • 6
  • D. Cline
    • 4
  • R. S. Chakrawarthy
    • 5
  • R. Chapman
    • 7
  • M. Cromaz
    • 6
  • P. Fallon
    • 6
  • S. J. Freeman
    • 5
  • A. Görgen
    • 6
  • W. Gelletly
    • 1
  • A. Hayes
    • 4
  • H. Hua
    • 4
  • S. D. Langdown
    • 1
    • 3
  • I. Y. Lee
    • 6
  • X. Liang
    • 7
  • Zs. Podolyák
    • 1
  • G. Sletten
    • 8
  • R. Teng
    • 4
  • D. Ward
    • 6
  • D. D. Warner
    • 9
  • A. D. Yamamoto
    • 1
    • 3
  1. 1.Department of PhysicsUniversity of SurreyGuildford, SurreyUK
  2. 2.Kernphysik IIGesellschaft für SchwerionenforschungDarmstadtGermany
  3. 3.Wright Nuclear Structure LaboratoryYale UniversityNew HavenUSA
  4. 4.Department of PhysicsUniversity of RochesterNew YorkUSA
  5. 5.Department of Physics and Astronomy, Schuster LaboratoryUniversity of ManchesterManchesterUK
  6. 6.Lawrence Berkeley National LaboratoryBerkeleyUSA
  7. 7.School of ICTUniversity of PaisleyPaisleyUK
  8. 8.The Niels Bohr InstituteUniversity of CopenhagenCopenhagenDenmark
  9. 9.CCLRC Daresbury LaboratoryWarringtonUK

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