Zeitschrift für Physik A Hadrons and Nuclei

, Volume 352, Issue 2, pp 163–169 | Cite as

Few-neutron removal from238U at relativistic energies

  • T. Aumann
  • K. Sümmerer
  • H. Geissel
  • B. Blank
  • T. Brohm
  • H. -G. Clerc
  • S. Czajkowski
  • C. Donzaud
  • A. Grewe
  • E. Hanelt
  • A. Heinz
  • H. Irnich
  • M. de Jong
  • A. Junghans
  • J. V. Kratz
  • A. Magel
  • G. Münzenberg
  • F. Nickel
  • M. Pfützner
  • A. Piechaczek
  • C. Röhl
  • C. Scheidenberger
  • K. -H. Schmidt
  • W. Schwab
  • S. Steinhäuser
  • W. Trinder
  • B. Voss
Nuclear Structure and Reaction

Abstract

As part of a comprehensive study of uranium fragmentation at relativistic energies at the GSI projectile fragment separator, FRS, inclusive neutron-removal cross sections have been measured for severalxn channels at projectile energies of 600 and 950A MeV using targets of Al, Cu and Pb. The variation of the experimental cross sections with target nuclear charge is used to disentangle nuclear and electromagnetic contributions. The electromagnetic cross sections agree surprisingly well with a simple harmonic oscillator calculation of giant dipole resonances based on measured photonuclear cross sections and do not require an extra enhancement of the two-phonon giant dipole excitation as concluded from similar measurements with197Au.

PACS

24.30.Cz 25.75.+r 

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Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • T. Aumann
    • 2
  • K. Sümmerer
    • 1
  • H. Geissel
    • 1
  • B. Blank
    • 5
  • T. Brohm
    • 3
  • H. -G. Clerc
    • 3
  • S. Czajkowski
    • 1
  • C. Donzaud
    • 6
  • A. Grewe
    • 3
  • E. Hanelt
    • 3
  • A. Heinz
    • 3
  • H. Irnich
    • 1
  • M. de Jong
    • 3
  • A. Junghans
    • 3
  • J. V. Kratz
    • 2
  • A. Magel
    • 4
  • G. Münzenberg
    • 1
  • F. Nickel
    • 1
  • M. Pfützner
    • 7
  • A. Piechaczek
    • 1
  • C. Röhl
    • 3
  • C. Scheidenberger
    • 1
  • K. -H. Schmidt
    • 1
  • W. Schwab
    • 1
  • S. Steinhäuser
    • 3
  • W. Trinder
    • 1
  • B. Voss
    • 3
  1. 1.Gesellschaft für Schwerionenforschung mbHDarmstadtGermany
  2. 2.Institut für KernchemieUniversität MainzMainzGermany
  3. 3.Technische Hochschule DarmstadtDarmstadtGermany
  4. 4.II. Physikalisches Institut der Universität GiessenGiessenGermany
  5. 5.CEN Bordeaux- GradignanGradignanFrance
  6. 6.IPN, Université de Paris SudOrsayFrance
  7. 7.University of WarsawWarsawPoland

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