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Correlations between nucleon transfer and fusion at near-barrier energies for the systems32S +100,101Ru and33S +90,91,92Zr

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

Abstract

Transfer reactions at two near-barrier energies for the systems32S +100,101Ru have been studied. Differential cross sections have been extracted for a large variety of channels, with a set-up yielding good mass, nuclear charge and energy resolutions. A steeper decrease of the measured angular distributions at backward angles with respect to the prediction of a semiclassical theory is interpreted as a loss of transfer flux feeding more complex channels and/or fusion. Coupled channels calculations, which use the transfer form factors derived from the experiment, reproduce the fusion cross sections at sub-barrier energies. Multi-nucleon transfer seems to play an essential role for the fusion process, as evidenced by the found strong correlations. A systematic comparison is made with the systems33S +90,91,92Zr, which have been the object of a previous experimental study with the same set-up.

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Deceased on February 1, 1991

We thank Mr. A. Dal Bello and Mr. J. Simovic for their precious technical assistance during the experiments, and Mr. G. Manente for the skilful preparation of the targets. We thank as well the Tandem staff of LNL for their professional operation of the accelerator. This work has been partially funded by the German Federal Ministery for Research and Technology (BMFT) under the contract number 06LM171 and the Deutsche Forschungsgemeinschaft (DFG).

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Corradi, L., Skorka, S.J., Winkelmann, T. et al. Correlations between nucleon transfer and fusion at near-barrier energies for the systems32S +100,101Ru and33S +90,91,92Zr. Z. Physik A - Hadrons and Nuclei 346, 217–226 (1993). https://doi.org/10.1007/BF01306082

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