Energy dependence of double giant resonances in pion double charge exchange

H. Ward, J. Johnson, K. Johnson, S. Greene, Y. Grof, C. Fred Moore, S. Mordechai, C. L. Morris, J. M. O'Donnell, C. Whitley

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


The energy dependence of the giant dipole resonance built on the isobaric analog state was measured in pion-induced double charge exchange on C13 at incident pion energies of 140-295 MeV. The cross section increases with energy. The excitation function has a typical non-spin-flip signature, expected from simple considerations and verified by sequential model calculations. Three narrower previously reported low-lying states in O13 (Ex=3.1, 4.5, and 6.1 MeV) exhibit a spin-flip signature and may correspond to the giant Gamow-Teller strength built on the isobaric analog state.

Original languageEnglish
Pages (from-to)3209-3212
Number of pages4
JournalPhysical Review Letters
Issue number21
StatePublished - 1 Jan 1993

ASJC Scopus subject areas

  • Physics and Astronomy (all)


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