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Few-neutron removal from238U at relativistic energies

  • Nuclear Structure and Reaction
  • Published:
Zeitschrift für Physik A Hadrons and Nuclei

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.

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Author information

Authors and Affiliations

  1. Gesellschaft für Schwerionenforschung mbH, Planckstrasse 1, D-64291, Darmstadt, Germany

    K. Sümmerer, H. Geissel, S. Czajkowski, H. Irnich, G. Münzenberg, F. Nickel, A. Piechaczek, C. Scheidenberger, K. -H. Schmidt, W. Schwab & W. Trinder

  2. Institut für Kernchemie, Universität Mainz, Fritz Straßmann-Weg 2, D-55099, Mainz, Germany

    T. Aumann & J. V. Kratz

  3. Technische Hochschule Darmstadt, Schlossgartenstrasse 9, D-64289, Darmstadt, Germany

    T. Brohm, H. -G. Clerc, A. Grewe, E. Hanelt, A. Heinz, M. de Jong, A. Junghans, C. Röhl, S. Steinhäuser & B. Voss

  4. II. Physikalisches Institut der Universität Giessen, Heinrich-Buff-Ring 16, D-35392, Giessen, Germany

    A. Magel

  5. CEN Bordeaux- Gradignan, F-33175, Gradignan, France

    B. Blank

  6. IPN, Université de Paris Sud, F-91406, Orsay, France

    C. Donzaud

  7. University of Warsaw, Warsaw, Poland

    M. Pfützner

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  1. T. Aumann
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  7. S. Czajkowski
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  11. A. Heinz
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  13. M. de Jong
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  15. J. V. Kratz
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  16. A. Magel
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  17. G. Münzenberg
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  23. K. -H. Schmidt
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  24. W. Schwab
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Aumann, T., Sümmerer, K., Geissel, H. et al. Few-neutron removal from238U at relativistic energies. Z. Physik A - Hadrons and Nuclei 352, 163–169 (1995). https://doi.org/10.1007/BF01298903

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  • DOI: https://doi.org/10.1007/BF01298903

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