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Cross sections for evaporation residue production near theN=126 shell closure

  • Nuclei
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Zeitschrift für Physik A Atoms and Nuclei

Abstract

In fusion reactions of40Ar with isotopes of Ho, Tm, Yb, Lu, Hf and Ta, cross sections for the production of proton-rich evaporation-residues near the 126 neutron shell were measured. This first comprehensive study of very fissile spherical residues reveals a surprisingly low stabilizing influence of the sphericalN=126 shell on the survival probability. The experimental results are compared with evaporation calculations. Conclusions for the production of superheavy nuclei are drawn.

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Authors and Affiliations

  1. Technische Hochschule Darmstadt, Institut für Kernphysik, Federal Republic of Germany

    D. Vermeulen, H. -G. Clerc & C. -C. Sahm

  2. Gesellschaft für Schwerionenforschung, Darmstadt, Federal Republic of Germany

    K. -H. Schmidt, J. G. Keller, G. Münzenberg & W. Reisdorf

Authors
  1. D. Vermeulen
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  2. H. -G. Clerc
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  3. C. -C. Sahm
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  4. K. -H. Schmidt
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  5. J. G. Keller
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  6. G. Münzenberg
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  7. W. Reisdorf
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Additional information

The authors thank P. Armbruster for the encouraging interest in this work. The experiments would not have been possible without the efforts of the UNILAC crew and the assistance of the target laboratory. We are especially indebted to the Institut Rene Bernas which prepared the Hf-targets. Financial support of the Bundesministerium für Forschung und Technology is gratefully acknowledged.

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Vermeulen, D., Clerc, H.G., Sahm, C.C. et al. Cross sections for evaporation residue production near theN=126 shell closure. Z Physik A 318, 157–169 (1984). https://doi.org/10.1007/BF01413464

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  • DOI: https://doi.org/10.1007/BF01413464

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