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Fission accompanied by alpha particle emission in the12C(85MeV)+232Th reaction

  • Heavy Ions, Fission
  • Published:
Zeitschrift für Physik A Atomic Nuclei

Abstract

Inclusive and coincident spectra of alpha particles and fission fragments were measured for the232Th+12C (85 MeV) reaction to study the influence of the excitation energy and the angular momentum on the fission of the compound nucleus and to separate different alpha particle emission mechanisms. At backward angles α emission can be accounted for by the evaporation processes. At forward angles the most important contribution is given by the break-up fusion process. Mass distributions for compound nuclei244Cm (E*=58 MeV,ff coincidences), and240Pu (E*=37 MeV,ff α coincidences) were obtained. In the case of240Pu mass distribution has a shape different from those obtained in light ion reactions at the same excitation energy, indicating the strong influence of the entrance channel. The dependence of the mass distribution shape on the α particle energy is also examined.

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Authors and Affiliations

  1. Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, Dubna, USSR

    W. Augustyniak, C. Borcea, M. Lewitowicz, N. Hoai Chau, Yu. E. Penionzhkevich, V. G. Sandukovski, M. Sowinski & S. Chojnacki

  2. Institute for Nuclear Studies, Warsaw, Poland

    W. Augustyniak

  3. National Atomic Energy Agency, Warsaw, Poland

    M. Lewitowicz & M. Sowinski

  4. University of Warsaw, Poland

    S. Chojnacki

Authors
  1. W. Augustyniak
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  2. C. Borcea
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  3. M. Lewitowicz
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  4. N. Hoai Chau
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  5. Yu. E. Penionzhkevich
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  6. V. G. Sandukovski
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  7. M. Sowinski
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  8. S. Chojnacki
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Additional information

The authors are indebted to Prof. Yu.Ts. Oganessian for his permanent interest in the present work and to Dr. B.I. Pustylnik for stimulating discussions.

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Augustyniak, W., Borcea, C., Lewitowicz, M. et al. Fission accompanied by alpha particle emission in the12C(85MeV)+232Th reaction. Z. Physik A - Atomic Nuclei 332, 209–217 (1989). https://doi.org/10.1007/BF01289777

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  • DOI: https://doi.org/10.1007/BF01289777

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