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Alpha decay of the new isotopes207, 208Ac

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Zeitschrift für Physik A Hadrons and Nuclei

Abstract

Two new neutron-deficient isotopes207,208Ac have been produced in fusion reactions with 5.2–5.6 MeV/nucleon40Ar ions on175Lu and identified on the basis of genetic correlations. The fusion evaporation products were separated on-line using a gas-filled magnetic recoil separator. The alpha energy and half-life of208Ac were determined to be (7572±15) keV and (95 +24−16 ) ms, respectively. A new alpha line with a half-life of (25 +9−5 ) ms and an energy of (7758±20) keV is assigned to the decay of an isomeric state in208Ac. Another new activity with a half-life of (22 +40−9 ) ms and an alpha energy of (7712±25) keV is assigned to207Ac.

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Authors and Affiliations

  1. Department of Physics, University of Jyväskylä, FIN-40351, Jyväskylä, Finland

    M. Leino, J. Uusitalo, T. Enqvist, A. Jokinen, K. Loberg, W. H. Trzaska & J. Äystö

  2. Department of Physics, University of Helsinki, FIN-00170, Helsinki, Finland

    K. Eskola

Authors
  1. M. Leino
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  2. J. Uusitalo
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  3. T. Enqvist
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  4. K. Eskola
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  5. A. Jokinen
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  6. K. Loberg
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  7. W. H. Trzaska
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  8. J. Äystö
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Supported by the Academy of Finland

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Leino, M., Uusitalo, J., Enqvist, T. et al. Alpha decay of the new isotopes207, 208Ac. Z. Physik A - Hadrons and Nuclei 348, 151–152 (1994). https://doi.org/10.1007/BF01289604

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  • DOI: https://doi.org/10.1007/BF01289604

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