Unexpected Strong Decay Mode of Superheavy Nuclei

  • D. N. PoenaruEmail author
  • R. A. Gherghescu
  • W. Greiner
Part of the FIAS Interdisciplinary Science Series book series (FIAS)


Calculations of half-lives of superheavy nuclei (SH) show an unexpected result: for some of them heavy particle radioactivity (HPR) dominates over alpha decay—the main decay mode of the majority of recently discovered SHs. The result is important for theory and future experiments producing heavier SHs with a substantial amount of funding. The standard identification technique by alpha decay chains will be impossible for these cases. HPR had been predicted in 1980 four years before the first experiment. The daughter is mainly the doubly magic \(^{208}\)Pb. We changed the concept of HPR to allow emitted particles with \(Z_e > 28\) from parents with \(Z > 110\) (daughter around \(^{208}\)Pb). We find a trend toward shorter half-lives and larger branching ratios relative to alpha decay for heavier SHs. A new table of measured masses AME11 and the theoretical LiMaZe01, KTUY05 and FRDM95 tables are used to determine Q-values.



This work was partially supported by Deutsche Forschungsgemeinschaft bibmycro and partially within IDEI Programme under contracts 43/05.10.2011 and 42/05.10.2011 with UEFISCDI, Bucharest.


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Copyright information

© Springer International Publishing Switzerland 2013

Authors and Affiliations

  • D. N. Poenaru
    • 1
    • 2
    Email author
  • R. A. Gherghescu
    • 1
    • 2
  • W. Greiner
    • 2
  1. 1.Horia Hulubei National Institute of Physics and Nuclear EngineeringBucharest-MagureleRomania
  2. 2.Frankfurt Institute for Advanced StudiesJ. W. Goethe UniversityFrankfurt am MainGermany

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