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Production of fragments with Z≥ 8 in interaction of 12.7 GeV 4He+U, Pb, Au and Ag: track detector study

  • Ž. Todorović
  • S. Savović
  • S. Jokić
Heavy ion physics

Abstract:

The processes of production of fragments with Z≥ 8 in the interaction of 12.7 GeV 4He with U, Pb, Au and Ag have been analyzed using the polycarbonate track detector Makrofol. The sandwich technique was used which enables direct observation of multiply charged fragment emission by a single nucleus. The decay channels ending with one, two, or more (three, four) fragments were detected. A classification scheme based on the multiplicity of heavy fragments with Z > 20 was used in order to identify the events belonging to the different reaction channels. The cross sections, excitation energies and multiplicities of intermediate-mass fragments 8 ≤Z≤ 20 have been determined for the various reaction mechanisms, and their variation as a function of the target mass has been investigated.

PACS:25.55.-e 3H-, 3He-, and 4He-induced reactions – 25.70.P2 Multifragment emission and correlations – 25.85.Ge Charged-particle-induced fission 

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Copyright information

© Springer-Verlag Berlin Heidelberg 1998

Authors and Affiliations

  • Ž. Todorović
    • 1
  • S. Savović
    • 2
  • S. Jokić
    • 3
  1. 1.Institute of Physics, P. O. Box 68, 11080 Belgrade, YugoslaviaYU
  2. 2.Faculty of Science, P. O. Box 60, 34000 Kragujevac, YugoslaviaYU
  3. 3.Institute of Nuclear Sciences “Vinča”, 11101 Belgrade, YugoslaviaYU

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