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Mass and charge flow in the reaction 7.1 MeV/u197Au+63Cu

  • Heavy Ion Physics
  • Published:
Zeitschrift für Physik A Hadrons and Nuclei

Abstract

Mass-yield and angular-distribution data are presented for products from the reaction of 7.1 MeV/μ 197Au with63Cu. With help from information derived from the latter, the former are classified into components corresponding to quasielastic transfer (580±80 mb), deep-inelastic transfer plus quasifission (1300±130 mb), fusionfission (≦195 mb), and sequential fission (195±45 mb). The fusion excitation function calculated with the Dynamic Capture model standard parameter set reproduces our deduced fusion-fission cross section well. Moreover, using this cross section as well as additional published data for the same reaction system, we extract ans-wave fusion-barrier shift (“extra push”) for this system of 35±7 MeV, which is in good agreement with the systematics derived from other fusion-barrier shifts which have been reported in the literature. Lastly, support is found for the Dissipative Diabatic Dynamics model prediction that dynamically-hindered fusion trajectories are reflected into quasielastic channels.

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Author notes

  1. B. Jäckel

    Present address: Abt. PLS, Paul Scherrer Institute, CH-5232, Villigen PSI, Switzerland

  2. A. Rox

    Present address: Staatliches Materialprüfungsamt Nordrhein-Westfalen, W-4600, Dortmund, Federal Republic of Germany

  3. W. Westmeier

    Present address: Gesellschaft für Kernspektrometrie mbH, W-3557, Ebsdorfergrund-Mölln, Federal Republic of Germany

Authors and Affiliations

  1. Institut für Kernchemie, Universität Marburg, W-3550, Marburg, Federal Republic of Germany

    B. Jäckel, A. Rox, R. A. Esterlund, W. Westmeier, M. Knaack & P. Patzelt

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  1. B. Jäckel
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  2. A. Rox
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  3. R. A. Esterlund
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  4. W. Westmeier
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  5. M. Knaack
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  6. P. Patzelt
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Additional information

Research supported by the Bundesministerium für Forschung und Technologie under contract number 06 MR 553

We wish to thank the operating crews of the GSI UNILAC for their efforts in obtaining stable and intense beams. Special thanks are due to G. Wirth and colleagues for valuable assistance in setting up the experiments, as well as to W. Eissner and co-workers for building the catcher-foil holders. The supplying of enriched63Cu targets by H. Folger and the GSI Target Laboratory is very much appreciated. Financial support by the Bundesministerium für Forschung und Technologie under contract number 06-MR-553 is gratefully acknowledged.

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Jäckel, B., Rox, A., Esterlund, R.A. et al. Mass and charge flow in the reaction 7.1 MeV/u197Au+63Cu. Z. Physik A - Hadrons and Nuclei 339, 475–487 (1991). https://doi.org/10.1007/BF01288431

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  • DOI: https://doi.org/10.1007/BF01288431

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