Advertisement

Unexpected Strong Decay Mode of Superheavy Nuclei

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

Abstract

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.

Notes

Acknowledgments

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.

References

  1. 1.
    G. Audi, W. Meng: Private, communication, April (2011).Google Scholar
  2. 2.
    R. Blendowske, H. Walliser, Phys. Rev. Lett. 61, 1930–1933 (1988)ADSCrossRefGoogle Scholar
  3. 3.
    R. Bonetti, A. Guglielmetti, Rom. Rep. Phys. 59, 301–310 (2007)Google Scholar
  4. 4.
    Encyclopaedia Britannica Online, 2011. Web http://www.britannica.com/EBchecked/topic/465998/
  5. 5.
    W. Greiner, M. Ivaşcu, D.N. Poenaru, A. Săndulescu, Cluster radioactivities, in Treatise on Heavy Ion Science, vol. 8, ed. by D.A. Bromley (Plenum Press, New York, 1989), pp. 641–722CrossRefGoogle Scholar
  6. 6.
    W. Greiner, D.N. Poenaru: Neutron Rich Long-Lived Superheavies, ed. by M. Brenner Cluster Structure of Atomic Nuclei, chap. 5, (Research Signpost, Trivandrum, India, 2010), pp. 119–146.Google Scholar
  7. 7.
    D.C. Hoffman, T.M. Hamilton, M.R. Lane, Spontaneous Fission. In: Nuclear Decay Modes, chap. 10, (Institute of Physics Publishing, Bristol, 1996) pp. 393–432.Google Scholar
  8. 8.
    S. Hofmann, Radiochim. Acta 99, 405–428 (2011)CrossRefGoogle Scholar
  9. 9.
    S. Hofmann, G. Münzenberg, Rev. Mod. Phys. 72, 733–767 (2000)ADSCrossRefGoogle Scholar
  10. 10.
    P. Jachimowicz, M. Kowal, J. Skalski, Phys. Rev. C 83, 054302 (2011)ADSCrossRefGoogle Scholar
  11. 11.
    A.V. Karpov, V.I. Zagrebaev, W Greiner, In these Proceedings, (2012).Google Scholar
  12. 12.
    H. Koura, T. Tachibana, M. Uno, M. Yamada, Prog. Theor. Phys. 113, 305–325 (2005)ADSCrossRefGoogle Scholar
  13. 13.
    S. Liran, A. Marinov, N. Zeldes, Phys. Rev. C62, 047301 (2000)ADSGoogle Scholar
  14. 14.
    S. Liran, A. Marinov, N. Zeldes, Phys. Rev. C 66, 024303 (2002) E-print arXiv nucl-th/0102055v1.Google Scholar
  15. 15.
    R.G. Lovas, R.J. Liotta, A. Insolia, K. Varga, D.S. Delion, Phys. Rep. 294, 265–362 (1998)ADSCrossRefGoogle Scholar
  16. 16.
    P. Möller, J.R. Nix, W.D. Myers, W.J. Swiatecki, Atomic Data Nucl. Data Tab. 59, 185–381 (1995)ADSCrossRefGoogle Scholar
  17. 17.
    K. Morita et al., J. Phys. Soc. Jpn. 76, 045001 (2007)ADSCrossRefGoogle Scholar
  18. 18.
    W.D. Myers, W.J. Swiatecki, Nucl. Phys. A 81, 1–60 (1966)Google Scholar
  19. 19.
    Y.T. Oganessian, J. Phys. G: Nucl. Part. Phys. 34, R165–R242 (2007)ADSCrossRefGoogle Scholar
  20. 20.
    Y.T. Oganessian, Radiochim. Acta 99, 429–439 (2011)CrossRefGoogle Scholar
  21. 21.
    Y.T. Oganessian et al., Phys. Rev. Lett. 104, 142502 (2010)ADSCrossRefGoogle Scholar
  22. 22.
    D.N. Poenaru, W. Greiner (eds.), Handbook of Nuclear Properties (Clarendon Press, Oxford, 1996)Google Scholar
  23. 23.
    D.N. Poenaru, W. Greiner, Theories of Cluster Radioactivities, in Nuclear Decay Modes. chap. 6, (Institute of Physics Publishing, Bristol, 1996) pp. 275–336.Google Scholar
  24. 24.
    D.N. Poenaru, R.A. Gherghescu, W. Greiner, Phys. Rev., C 73, 014608 (2006).Google Scholar
  25. 25.
    D.N. Poenaru, R.A. Gherghescu, W. Greiner, Phys. Rev. Lett. 107, 062503 (2011)ADSCrossRefGoogle Scholar
  26. 26.
    D.N. Poenaru, W. Greiner, Phys. Scr. 44, 427–429 (1991)ADSCrossRefGoogle Scholar
  27. 27.
    D.N. Poenaru, W. Greiner (eds.), Experimental Techniques in Nuclear Physics (Walter de Gruyter, Berlin, 1997)Google Scholar
  28. 28.
    D.N. Poenaru and W. Greiner, Cluster radioactivity, in C. Beck (ed.) Clusters in Nuclei, Vol. 1. Lecture Notes in Physics 818, chap. 1, (Springer, Berlin 2010), pp. 1–56.Google Scholar
  29. 29.
    D.N. Poenaru, M. Ivaşcu, W. Greiner, in Particle Emission from Nuclei, Vol. III: Fission and Beta-Delayed Decay Modes, chap. 7, (CRC Press, Boca Raton, Florida 1989), pp. 203–235 (1989).Google Scholar
  30. 30.
    D.N. Poenaru, Y. Nagame, R.A. Gherghescu, W. Greiner, Phys. Rev. C 65, 054308 (2002)ADSCrossRefGoogle Scholar
  31. 31.
    D.N. Poenaru, I.H. Plonski, W. Greiner, Phys. Rev., C 74, 014312 (2006).Google Scholar
  32. 32.
    D.N. Poenaru, D. Schnabel, W. Greiner, D. Mazilu, R. Gherghescu, Atomic Data Nucl. Data Tab. 48, 231–327 (1991)ADSCrossRefGoogle Scholar
  33. 33.
    C. Qi, F.R. Xu, R.J. Liotta, R. Wyss, Phys. Rev. Lett. 103, 072501 (2009)ADSCrossRefGoogle Scholar
  34. 34.
    H.J. Rose, G.A. Jones, Nature 307, 245–247 (1984)ADSCrossRefGoogle Scholar
  35. 35.
    A. Sandulescu, D.N. Poenaru, W. Greiner, Sov. J. Part. Nucl. 11, 528–541 (1980)Google Scholar
  36. 36.
    R. Smolanczuk, J. Skalski, A. Sobiczewski, Phys. Rev. C 52, 1871–1880 (1995)ADSCrossRefGoogle Scholar
  37. 37.
    A. Sobiczewski, Radiochim. Acta 99, 395–404 (2011)CrossRefGoogle Scholar
  38. 38.
    V.M. Strutinsky, Nucl. Phys. A 95, 420–442 (1967)ADSCrossRefGoogle Scholar
  39. 39.
    M. Warda, L.M. Robledo, Phys. Rev. C 84, 044608 (2011)ADSCrossRefGoogle Scholar

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

Personalised recommendations