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Beta-decay half-lives of neutron rich Cu and Ni isotopes produced by thermal fission of235U and239Pu

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Zeitschrift für Physik A Atomic Nuclei

Abstract

The half-lives of very neutron rich isotopes of Ni and Cu have been measured. The isotopes are produced in very asymmetric thermal fission of235U and239Pu at the I.L.L. high flux reactor. They are separated by means of the Lohengrin spectrometer. They are identified with aΔE-E ionization chamber and implanted in one of the 8 Si planar detectors where theβ-particles are also detected. The time correlations between the implantation and the detection ofβ-particles provide the half-life. The values obtained are compared to current theoretical predictions.

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Author notes

  1. P. Armbruster

    Present address: Institut Laue-Langevin, Grenoble, France

Authors and Affiliations

  1. Institut Laue-Langevin, Grenoble, France

    M. Bernas, J. P. Bocquet, R. Brissot, H. Faust, Ch. Kozhuharov & J. L. Sida

  2. Institut de Physique Nucléaire, Orsay, France

    M. Bernas & J. L. Sida

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

    P. Armbruster & Ch. Kozhuharov

  4. Institut des Sciences Nucléaires, Grenoble, France

    R. Brissot

Authors
  1. M. Bernas
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  2. P. Armbruster
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  3. J. P. Bocquet
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  4. R. Brissot
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  5. H. Faust
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  6. Ch. Kozhuharov
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  7. J. L. Sida
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Additional information

We would like to acknowledge the work of K. Balog and M.T. Winkelmann who programmed the on-line data acquisition system in use at Lohengrin and the contributions of Ch.O. Bacri and S. Czajkowski who helped at different stages of the experiment.

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Bernas, M., Armbruster, P., Bocquet, J.P. et al. Beta-decay half-lives of neutron rich Cu and Ni isotopes produced by thermal fission of235U and239Pu. Z. Physik A - Atomic Nuclei 336, 41–51 (1990). https://doi.org/10.1007/BF01904161

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  • DOI: https://doi.org/10.1007/BF01904161

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