The European Physical Journal A

, Volume 32, Issue 3, pp 251–260 | Cite as

The reaction 48Ca + 238U → 286112* studied at the GSI-SHIP

  • S. Hofmann
  • D. Ackermann
  • S. Antalic
  • H. G. Burkhard
  • V. F. Comas
  • R. Dressler
  • Z. Gan
  • S. Heinz
  • J. A. Heredia
  • F. P. Heßberger
  • J. Khuyagbaatar
  • B. Kindler
  • I. Kojouharov
  • P. Kuusiniemi
  • M. Leino
  • B. Lommel
  • R. Mann
  • G. Münzenberg
  • K. Nishio
  • A. G. Popeko
  • S. Saro
  • H. J. Schött
  • B. Streicher
  • B. Sulignano
  • J. Uusitalo
  • M. Venhart
  • A. V. Yeremin
Regular Article - Nuclear Structure and Reactions

Abstract.

The fusion reaction of 48Ca projectiles with 238U target nuclei was studied at the velocity filter SHIP of GSI in Darmstadt. Two decay chains were measured, which fully confirm data that were previously assigned to the isotope 283112 in experiments at the Flerov Laboratory in Dubna. Two other events are consistent with a 50% spontaneous-fission (SF) branch of this isotope. The mean value obtained for the half-life of 283112 is (6.9 +6.9-2.3 s, the α energy is (9.520±0.015) MeV, and the total kinetic energy (TKE) of SF is (238±14) MeV. The half-life of the α decay daughter nucleus 279Ds is (0.18 +0.32-0.07 s, and the TKE of SF is (210 +32-11 MeV. The cross-section deduced from all four events is (0.72 +0.58-0.35 pb , measured at an excitation energy of 34.6MeV of the compound nucleus 286112.

PACS.

21.10.Dr Binding energies and masses 23.60.+e α decay 25.70.-z Low and intermediate energy heavy-ion collisions 25.85.Ca Spontaneous fission 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • S. Hofmann
    • 1
    • 2
  • D. Ackermann
    • 1
  • S. Antalic
    • 3
  • H. G. Burkhard
    • 1
  • V. F. Comas
    • 4
  • R. Dressler
    • 5
  • Z. Gan
    • 6
  • S. Heinz
    • 1
  • J. A. Heredia
    • 4
  • F. P. Heßberger
    • 1
  • J. Khuyagbaatar
    • 1
  • B. Kindler
    • 1
  • I. Kojouharov
    • 1
  • P. Kuusiniemi
    • 7
  • M. Leino
    • 8
  • B. Lommel
    • 1
  • R. Mann
    • 1
  • G. Münzenberg
    • 1
  • K. Nishio
    • 9
  • A. G. Popeko
    • 10
  • S. Saro
    • 3
  • H. J. Schött
    • 1
  • B. Streicher
    • 3
  • B. Sulignano
    • 1
  • J. Uusitalo
    • 8
  • M. Venhart
    • 3
  • A. V. Yeremin
    • 10
  1. 1.Gesellschaft für Schwerionenforschung (GSI)DarmstadtGermany
  2. 2.Institut für KernphysikJohann Wolfgang Goethe-UniversitätFrankfurtGermany
  3. 3.Department of Nuclear Physics and BiophysicsComenius UniversityBratislavaSlovakia
  4. 4.InSTECHabanaCuba
  5. 5.Paul Scherrer InstituteVilligenSwitzerland
  6. 6.Institute of Modern PhysicsChinese Academy of SciencesLanzhouChina
  7. 7.CUPPUniversity of OuluFinland
  8. 8.Department of PhysicsUniversity of JyväskyläJyväskyläFinland
  9. 9.Japan Atomic Energy AgencyTokai, IbarakiJapan
  10. 10.Flerov Laboratory of Nuclear ReactionsJINRDubnaRussia

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