Please use this identifier to cite or link to this item:
http://acervodigital.unesp.br/handle/11449/63607
- Title:
- Giant first-forbidden resonances
- Universidad Nacional de La Plata
- Universidade de São Paulo (USP)
- Universidade Estadual Paulista (UNESP)
- 0375-9474
- Recent experimental data on first-forbidden charge-exchange resonances are discussed in the framework of a schematic model. We also evaluate the screening of the weak coupling constants induced by both the giant resonances and the Δ-isobar. It is shown that the last effect does not depend on the multipolarity of the one-particle moment. Due to the same reason, the fraction of the reaction strength pushed up into the Δ-resonance region is always the same regardless of the quantum numbers carried by the excitation. Simple expressions are derived for the dependence of the excitation energies of the first-forbidden giant resonances on the mass number and isospin of the target. The model reproduces consistently both the Gamow-Teller and the first-forbidden resonances. © 1983.
- 16-May-1983
- Nuclear Physics, Section A, v. 399, n. 2, p. 478-502, 1983.
- 478-502
- http://dx.doi.org/10.1016/0375-9474(83)90259-2
- Acesso restrito
- outro
- http://repositorio.unesp.br/handle/11449/63607
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