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Two mode fission: Existence of two independent paths in the fission of actinide elements

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

Abstract

We attempted to confirm the existence of two-mode-fission mechanism in the232Th and238U plus4He systems. Angular distributions and differential ranges of the fission fragments were measured for both systems. Two distinct groups, symmetric and asymmetric, were observed in the anisotropy of the fragments obtained from the angular distributions in either systems. Kinetic energies of the fragments were deduced from the measured ranges and the effective distances were calculated from the data. The distribution of the resulting distances was classified into two groups also, indicating the existence of the symmetric and asymmetric modes. This strongly suggests existence of two independent paths in the fission process.

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Author notes

  1. N. Yukawa

    Present address: Sumitomo Rubber Industries LTD, Kobe

  2. H. Kobayashi

    Present address: Recruit LTD, Tokyo

Authors and Affiliations

  1. Department of Chemistry and Laboratory of Nuclear Studies, Faculty of Science, Osaka University, Toyonaka, 560, Osaka, Japan

    N. Takahashi, N. Yukawa, H. Kobayashi, A. Yokoyama, T. Saito & H. Baba

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Additional information

Communicated by: P. Armbruster

We would like to thank the crew of the cyclotron at RCNP for the operation and Prof. S. Morinobu for the irradiation of the target with pneumatic transportation system.

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Takahashi, N., Yukawa, N., Kobayashi, H. et al. Two mode fission: Existence of two independent paths in the fission of actinide elements. Z. Physik A - Hadrons and Nuclei 353, 35–42 (1995). https://doi.org/10.1007/BF01297725

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  • DOI: https://doi.org/10.1007/BF01297725

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