Peculiarities in fragment mass distribution in the 238U + 40Ar (243 MeV) reaction

  • Yu.V. Pyatkov
  • Yu.E. Penionzhkevich
  • W.H. Trzaska
  • O.I. Osetrov
  • A.A. Alexandrov
  • I.A. Alexandrova
  • J. Äystö
  • K.-Th. Brinkmann
  • S.V. Khlebnikov
  • V.F. Kushniruk
  • A.V. Kuznetsov
  • V.G. Lyapin
  • V.A. Maslov
  • M. Mutterer
  • Z. Radivojevich
  • V.A. Rubchenya
  • Yu.G. Sobolev
  • G.P. Tiourine
  • D.N. Vakhtin

Abstract:

A pronounced fine structure (FS) in the form of distinct peaks was observed in neutron gated mass spectra from the decay of the 278110 composite system produced in the reaction 238U + 40Ar (243 MeV) at an initial excitation energy E* > 70 MeV. The FS peaks are located in the vicinity of mass numbers 70-80, 100, and 130, which correspond to those of magic nuclei (clusters). In the data there is also evidence for a new type of decay -- collinear cluster tripartition of an excited nucleus.

PACS. 25.70.Lm Strongly damped collisions – 25.70.Pq Multifragment emission and correlations – 25.85.Ge Charged-particle-induced fission 

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© Società Italiana di Fisica and Springer-Verlag 2001

Authors and Affiliations

  • Yu.V. Pyatkov
    • 1
  • Yu.E. Penionzhkevich
    • 2
  • W.H. Trzaska
    • 3
  • O.I. Osetrov
    • 4
  • A.A. Alexandrov
    • 2
  • I.A. Alexandrova
    • 2
  • J. Äystö
    • 3
  • K.-Th. Brinkmann
    • 5
  • S.V. Khlebnikov
    • 4
  • V.F. Kushniruk
    • 2
  • A.V. Kuznetsov
    • 4
  • V.G. Lyapin
    • 4
  • V.A. Maslov
    • 2
  • M. Mutterer
    • 6
  • Z. Radivojevich
    • 3
  • V.A. Rubchenya
    • 4
  • Yu.G. Sobolev
    • 2
  • G.P. Tiourine
    • 4
  • D.N. Vakhtin
    • 3
  1. 1.Moscow Engineering Physics Institute, Moscow, RussiaRU
  2. 2.Flerov Laboratory of Nuclear Reaction, JINR, Dubna, RussiaRU
  3. 3.Department of Physics of University of Jyväskylä, Jyväskylä, FinlandFI
  4. 4.Khlopin Radium Institute, St.Petersburg, RussiaRU
  5. 5.Technical University, Dresden, GermanyDE
  6. 6.Technical University, Darmstadt, GermanyDE

Personalised recommendations