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Comparison of the double giant-dipole states observed in (π,π+) and (π+,π) reactions on Ca40 and Al27

S. Mordechai, H. Ward, K. Johnson, G. Kahrimanis, David Saunders, C. Fred Moore, J. M. O’Donnell, M. A. Kagarlis, D. Smith, H. T. Fortune, and C. L. Morris
Phys. Rev. C 43, R1509(R) – Published 1 April 1991
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Abstract

The double isovector giant-dipolar state has been observed in the (π,π+) ΔTz=+2 and (π+,π) ΔTz=-2 double-charge-exchange reactions on Ca40 and Al27. The resonances observed in the (π,π+) reaction are closely related via Coulomb energy and isospin symmetry to the resonances measured in the inverse (π+,π) reaction on the same nuclei. The new observations provide strong support for the identification of the double giant-dipole state in nuclei. The differences between the self-conjugate and non-self-conjugate cases are outlined.

  • Received 9 November 1990

DOI:https://doi.org/10.1103/PhysRevC.43.R1509

©1991 American Physical Society

Authors & Affiliations

S. Mordechai

  • Ben-Gurion University of the Negev, Beer-Sheva 84105, Israel
  • University of Texas at Austin, Austin, Texas 78712

H. Ward, K. Johnson, G. Kahrimanis, David Saunders, and C. Fred Moore

  • University of Texas at Austin, Austin, Texas 78712

J. M. O’Donnell, M. A. Kagarlis, D. Smith, and H. T. Fortune

  • University of Pennsylvania, Philadelphia, Pennsylvania 19104

C. L. Morris

  • Los Alamos National Laboratory, Los Alamos, New Mexiso 87545

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Vol. 43, Iss. 4 — April 1991

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