Zeitschrift für Physik A Hadrons and Nuclei

, Volume 354, Issue 1, pp 37–43 | Cite as

Two-center molecular states in9B,9Be,10Be, and10B

  • W. von Oertzen


The molecular states in the mass 9 and 10 nuclei, which consist of two α-particles plus one or two valence nucleons (protons or neutrons) are discussed. Arguments for the existence of two-center dimers as excited states in10Be and corresponding resonances (p+9Be) in10B are given. The latter states are observed as anomalous (non statistical) population in the final state interactions in thep+9Be channel in various heavy ion collisions. With the establishment of two-center states (dimers) based on the αα-potential and a localized binding via two nucleons in10Be, the existence of more extended structures (multimers) by adding (α2n) structures to10Be* is postulated. Generally clustering intoα-particles and nucleons in terms of molecular states is expected to occur at excitation energies close to the threshold for these substructures in analogy to the clustering rules of Ikeda forα-particle nuclei. Consequences to clustering properties of neutron rich nuclei are discussed.


21.10-K 21.60.Gx 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    See for ex. A.C. Hurley: Introduction to the Theory of Small Molecules. Academic Press, London, New York 1976Google Scholar
  2. 2.
    W. von Oertzen: Nucl. Phys.A148 (1970) 529: W. von Oertzen, H.G. Bohlen: Phys. Rep.19C (1975) 1ADSGoogle Scholar
  3. 3.
    B. Imanishi, W. von Oertzen: Phys. Rep.155 (1987) 29CrossRefADSGoogle Scholar
  4. 4.
    B.L. Anderson, F. Dickmann, K. Dietrich: Nucl. Phys.A159 (1970) 337Google Scholar
  5. 5.
    D. Scharnweber, W. Greiner, U. Mosel: Nucl. Phys.A164 (1971) 257ADSGoogle Scholar
  6. 6.
    M.V. Zhukov, B.V. Danilin, D.V. Fedorov, J.M. Bang, I.J. Thompson, J.S. Vaagen: Phys. Rep.231 (1993) 151CrossRefADSGoogle Scholar
  7. 7.
    S. Okabe, Y. Abe, H. Tanaka: Prog. Theor. Phys.57 (1977) 866; S. Okabe, Y. Abe: Prog. Theor. Phys.61 (1979) 1049CrossRefADSGoogle Scholar
  8. 8.
    A. Fonesca, J. Revai, A. Matveenko: Nucl. Phys.A326 (1979) 182; Nucl. Phys.A339 (1980) 465ADSGoogle Scholar
  9. 9.
    C. Schwarz et al.: Phys. Rev.C49 (1994) 3316ADSGoogle Scholar
  10. 10.
    T.K. Nayak et al.: Phys. Rev.C45 (1992) 132ADSGoogle Scholar
  11. 11.
    D. Morrissey, W. Benenson, W. Friedmann: Ann. Rev. Nucl. Particle Science44 (1995) 28Google Scholar
  12. 12.
    F. Ajzenberg-Selove: Nucl. Phys.A540 (1992) 1; A490 (1988) 1Google Scholar
  13. 13.
    K. Ikeda: Proc. 5th Int. Conf. Clustering Aspects in Nucl. Subnuclear Systems, Kyoto 1988; J. Phys. Soc. Jap.58 (1989) suppl. p. 277, and refs. to prior workGoogle Scholar
  14. 14.
    W. Lichten: Phys. Rev.164 (1967) 131CrossRefADSGoogle Scholar
  15. 15.
    W.N. Catford, L.K. Fifield, E.L. Reber, K.W. Kemper, J.B. Brown: Nucl. Phys.A550 (1992) 517ADSGoogle Scholar
  16. 16.
    M.L. Rousk, F.C. Young, P.D. Forsyth, W.F. Hornyak: Nucl. Phys.A128 (1969) 401ADSGoogle Scholar
  17. 17.
    D.E. Alburger, E.K. Warbuton, A. Gallmann, D.H. Wilkinson: Phys. Rev.185 (1969) 1242CrossRefADSGoogle Scholar
  18. 18.
    F. Ajzenberg-Selove, E.R. Flynn, O. Hansen: Phys. Rev.C17 (1970) 1283ADSGoogle Scholar
  19. 19.
    B. Zwieglinski, W. Benneson, R.G. Robertson, W.R. Coker: Nucl. Phys.A315 (1979) 124ADSGoogle Scholar
  20. 20.
    A.A. Korshennikov et al.: Phys. Lett.B343 (1995) 53ADSGoogle Scholar
  21. 21.
    H. Horiuchi et al.: Nucl. Phys.A588 (1995) 121c and private communicationsGoogle Scholar

Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • W. von Oertzen
    • 1
  1. 1.Hahn-Meitner-Institut Berlin and Fachbereich PhysikFreie Universität BerlinBerlinGermany

Personalised recommendations