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On the decay properties of 269Hs and indications for the new nuclide 270Hs

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Abstract.

In bombardments of 248Cm with 143.7-146.8 MeV 26Mg ions the nuclides 269Hs and presumably 270Hs were produced. After chemical isolation, Hs atoms were identified by observing genetically linked nuclear-decay chains. Three chains originating from 269Hs confirmed the decay properties observed previously in the decay of 277112. Two chains exhibited the characteristics expected for the new nuclide 270Hs, which was predicted to be a deformed ”doubly magic” nucleus. From the measured \(E_\alpha =9.16^{+0.07}_{-0.03}\) MeV an \(\alpha\)-decay half-life of 3.6+0.8 -1.4 s was estimated.

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Author information

Authors and Affiliations

  1. Institut für Radiochemie, TU München, D-85748, Garching, Germany

    A. Türler

  2. Institut für Radiochemie, Paul Scherrer Institut, CH-5232, Villigen PSI, Switzerland

    Ch.E. Düllmann, H.W. Gäggeler, R. Dressler, B. Eichler, R. Eichler, F. Glaus, D.T. Jost, D. Piguet & S. Soverna

  3. Department of Chemistry and Biochemistry, University of Bern, CH-3012, Bern, Switzerland

    Ch.E. Düllmann, H.W. Gäggeler & S. Soverna

  4. Nuclear Science Division, Lawrence Berkeley National Laboratory, CA 94720, Berkeley, USA

    U.W. Kirbach, T.N. Ginter, K.E. Gregorich, D.C. Hoffman, D.M. Lee, H. Nitsche, J.B. Patin, R. Sudowe & P.M. Zielinski

  5. Flerov Laboratory of Nuclear Reactions, Joint Institute for Nuclear Research, 141980, Dubna, Moscow Region, Russia

    A.B. Yakushev & S.N. Timokhin

  6. Flerov Laboratory of Nuclear Reactions, Gesellschaft für Schwerionenforschung mbH, D-64291, Darmstadt, Germany

    M. Schädel, W. Brüchle, E. Jäger, V. Pershina, B. Schausten, E. Schimpf, H.-J. Schött & G. Wirth

  7. Institut für Kernchemie, Universität Mainz, D-55099, Mainz, Germany

    K. Eberhardt, P. Thörle & N. Trautmann

  8. Department of Chemistry, University of California, CA 94720-1460, Berkeley, USA

    D.C. Hoffman, H. Nitsche, J.B. Patin & P.M. Zielinski

  9. Institute of Modern Physics, Chinese Academy of Sciences, 730000, Lanzhou, PRC

    Z. Qin

  10. Institute of Modern Physics, Research Center Rossendorf e.V., D-01314, Dresden, Germany

    A. Vahle

Authors
  1. A. Türler
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  2. Ch.E. Düllmann
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  3. H.W. Gäggeler
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  4. U.W. Kirbach
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  5. A.B. Yakushev
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  6. M. Schädel
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  7. W. Brüchle
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  14. K.E. Gregorich
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  17. D.T. Jost
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  18. D.M. Lee
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  19. H. Nitsche
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  20. J.B. Patin
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  21. V. Pershina
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  22. D. Piguet
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  23. Z. Qin
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  24. B. Schausten
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  27. S. Soverna
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  28. R. Sudowe
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  31. N. Trautmann
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  32. A. Vahle
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  33. G. Wirth
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  34. P.M. Zielinski
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Corresponding author

Correspondence to A. Türler.

Additional information

Communicated by D. Schwalm

Received: 18 July 2002, Revised: 3 April 2003, Published online: 22 July 2003

PACS:

23.60.+e Alpha decay - 25.70.Gh Compound nucleus - 25.85.Ca Spontaneous fission - 27.90.+b \(220 \leq A\)

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Türler, A., Düllmann, C., Gäggeler, H. et al. On the decay properties of 269Hs and indications for the new nuclide 270Hs. Eur. Phys. J. A 17, 505–508 (2003). https://doi.org/10.1140/epja/i2002-10163-0

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  • DOI: https://doi.org/10.1140/epja/i2002-10163-0

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