Abstract
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−/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.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Peterson, R.J., de Haro, R.: Nucl. Phys. A459, 445 (1986)
Horen, D.J., Beene, J.R., Bertrand, F.E.: Phys. Rev. C37, 888 (1988)
Brown, V.R., Carr, J.A., Madsen, V.A., Petrovich: Phys. Rev. C37, 1537 (1988)
Johnson, M.B., Bethe, H.A.: Comments Nucl. Part. Phys.8, 75 (1978)
Johnson, M.B., Bethe, H.A.: Nucl. Phys. A305, 445 (1986)
Oakley, D.S., Braunstein, M.R., Kraushaar, J.J., Loveman, R.A., Peterson, R.J., Rilett, D.J.: Phys. Rev. C40, 852 (1989)
Ullmann, J.L. et al.: Phys. Rev. Lett.51, 1038 (1983)
Ullmann, J.L. et al.: Phys. Rev. C31, 177 (1985)
Bertsch, G.F., Tsai, S.F.: Phys. Rep.18, 125(1975)
Giai, N., Sagawa, H.: Phys. Lett.106B, 379 (1981)
Author information
Authors and Affiliations
Additional information
The authors are grateful to David Oakley and Jerry Peterson for helpful discussions and communication of their data before publication. The research work was partly supported by the Natural Sciences and Engineering Research Council of Canada.
Rights and permissions
About this article
Cite this article
Boucher, P.M., Castel, B. Isospin dependence of the isoscalar giant quadrupole response: Relevance to pion scattering in the Ni isotopes. Z. Physik A - Atomic Nuclei 334, 381–384 (1989). https://doi.org/10.1007/BF01294743
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF01294743