Advertisement

Mutual Support of Magicities

  • K.-H. Schmidt
  • D. Vermeulen

Abstract

A strong correlation of neutron- and proton shell strengths is demonstrated by a systematic comparison of nuclear binding energies. Both, neutron- and proton shells show a maximum strength at doubly magic nuclei and generally fall down drastically with increasing number of additional particles or holes. This mutual support of shell strengths is not reproduced by usually applied theoretical shell corrections. Therefore, the results of shell model calculations, especially in the vicinity of doubly magic nuclei, concerning ground state shell corrections, fission barriers and decay energies, are expected to show appreciable shortcomings. If the variation of shell strengths is taken into account, the interpretation of the separation energies in terms of single particle energies is modified.. This modification could solve the ‘lead anomaly’, the difficulty in describing the ground state shell corrections and the separation energies around 208Pb simultaneously.

Keywords

Mutual Support Shell Model Calculation Shell Correction Magic Nucleus Fission Barrier 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. 1.
    A. de-Shalit, M. Goldhaber, Phys. Rev. 92 (1953) 92CrossRefGoogle Scholar
  2. 2.
    B.L. Cohen, Phys. Rev. 127, (1962) 597ADSCrossRefGoogle Scholar
  3. 3.
    G. Scharff-Goldhaber, J. Phys. A: Math., Nucl. Gen., 7 (1974) L121ADSCrossRefGoogle Scholar
  4. 4.
    N. Zeldes, Ark. f. Fysik 36 (1966) 361Google Scholar
  5. 5.
    V.A. Kravtsow, N.N. Skachkov, Nucl. Data Tables A1 (1966) 491Google Scholar
  6. 6.
    S. Liran, N. Zeldes, Atomic Data and Nucl. Data Tables 17 (1976) 411ADSCrossRefGoogle Scholar
  7. 7.
    E. R. Hilf, H. v. Groote, Proc. of the Int. Worksh. on Gross Prop, of Nuclei and Nuclear Excitations III, Hirschegg, 1975 p. 230Google Scholar
  8. 8.
    K.-H. Schmidt, W. Faust, G. Münzenberg, H.-G. Clerc, W. Lang, K. Pielenz, D. Vermeulen, H. Wohlfahrt, H. Ewald, K. Güttner, Nucl. Phys., A318 (1979) 253ADSGoogle Scholar
  9. 9.
    E. Werner, K. Dietrich, P. Möller, R. Nix, Contribution to the International Symposion on Physics and Chemistry of Fission, Jülich 1979, IAEA-SM-241–C26Google Scholar
  10. 10.
    W.D. Myers, Droplet model of atomic nuclei, (IFI/Plenum, New York, 1977)CrossRefGoogle Scholar
  11. 11.
    A.H. Wapstra, K. Bos, Atomic Data and Nucl. Data Tables 19 (1977) 185ADSGoogle Scholar
  12. 12.
    M. Epherre, private communicationGoogle Scholar
  13. 13.
    A. Bohr, B. R. Mottelson, Nuclear Structure, Vol. I, (W.A. Benjamin, Inc., New York, 1969)Google Scholar
  14. 14.
    U. Mosel, Phys. Rev. C6 (1972) 971ADSGoogle Scholar
  15. 15.
    P.A. Seeger, Int. Conf. on the Prop, of Nuclei far from Stability, Leysin 1970, Vol. 1, p. 217Google Scholar
  16. 16.
    M. Brack, J. Damgard, A.S. Jensen, H.C. Pauli, V.M. Strutinski, C.Y. Wong, Rev. Mod. Phys. 44 (1972) 320ADSCrossRefGoogle Scholar
  17. 17.
    H. v. Groote, E. R. Hilf, K. Takahashi, Atomic Data and Nucl. Data Tables 17 (1976) 418CrossRefGoogle Scholar
  18. 18.
    M. Arnould, private communicationGoogle Scholar
  19. 19.
    K.-H. Schmidt, Proc. of the Int. Worksh. on Gross Prop, of Nuclei and Nuclear Excitations VII, Hirschegg 1979, p. 102Google Scholar

Copyright information

© Plenum Press, New York 1980

Authors and Affiliations

  • K.-H. Schmidt
    • 1
  • D. Vermeulen
    • 2
  1. 1.Gesellschaft für SchwerionenforschungGSIDarmstadtFederal Republic of Germany
  2. 2.Institut für KernphysikTechn. Hochschule DarmstadtFederal Republic of Germany

Personalised recommendations