Abstract
We identify two electric isovector giant resonances at =28 and 33 MeV in , and at =27 and 31 MeV in , distinguishing them from a continuum background in the LiBe) reaction at =26 MeV/nucleon and =0°. The shape of the underlying continuum is determined from a comparison of ΔS=0 and ΔS=1 energy spectra deduced with a coincidence method. The excitation energies of these resonances are consistent with those of the isovector giant quadrupole and monopole resonances previously observed by the electron scattering and the (,) reaction, respectively, though the widths presently observed are much narrower.
- Received 25 February 1992
DOI:https://doi.org/10.1103/PhysRevC.46.1667
©1992 American Physical Society