Zeitschrift für Physik A Atomic Nuclei

, Volume 334, Issue 4, pp 381–384 | Cite as

Isospin dependence of the isoscalar giant quadrupole response: Relevance to pion scattering in the Ni isotopes

  • P. M. Boucher
  • B. Castel
Nuclear Structure and Reactions


We study the isospin dependence of the isoscalar giant quadrupole response to pion excitation, with the aim of showing that the apparent anomaly in the π+ analyses is due to the highly selective nature of surface pion absorption. In that context, we present results of continuum RPA calculations which are consistent with recent inelastic pion scattering data on58–64Ni. In general, the calculation predicts a drastic increase in the ratio of neutron to proton transition density in going from56Ni to66Ni, a trend well substantiated by recent LAMPF experiments.


21.10.k 23.40.Hc 


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Peterson, R.J., de Haro, R.: Nucl. Phys. A459, 445 (1986)Google Scholar
  2. 2.
    Horen, D.J., Beene, J.R., Bertrand, F.E.: Phys. Rev. C37, 888 (1988)Google Scholar
  3. 3.
    Brown, V.R., Carr, J.A., Madsen, V.A., Petrovich: Phys. Rev. C37, 1537 (1988)Google Scholar
  4. 4.
    Johnson, M.B., Bethe, H.A.: Comments Nucl. Part. Phys.8, 75 (1978)Google Scholar
  5. 5.
    Johnson, M.B., Bethe, H.A.: Nucl. Phys. A305, 445 (1986)Google Scholar
  6. 6.
    Oakley, D.S., Braunstein, M.R., Kraushaar, J.J., Loveman, R.A., Peterson, R.J., Rilett, D.J.: Phys. Rev. C40, 852 (1989)Google Scholar
  7. 7.
    Ullmann, J.L. et al.: Phys. Rev. Lett.51, 1038 (1983)Google Scholar
  8. 8.
    Ullmann, J.L. et al.: Phys. Rev. C31, 177 (1985)Google Scholar
  9. 9.
    Bertsch, G.F., Tsai, S.F.: Phys. Rep.18, 125(1975)Google Scholar
  10. 10.
    Giai, N., Sagawa, H.: Phys. Lett.106B, 379 (1981)Google Scholar

Copyright information

© Springer-Verlag 1989

Authors and Affiliations

  • P. M. Boucher
    • 1
  • B. Castel
    • 1
  1. 1.Department of PhysicsQueen's UniversityKingstonCanada

Personalised recommendations