Abstract
The double isovector giant-dipolar state has been observed in the (,) Δ=+2 and (,) Δ=-2 double-charge-exchange reactions on and . The resonances observed in the (,) reaction are closely related via Coulomb energy and isospin symmetry to the resonances measured in the inverse (,) 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