Direct-decay properties of charge-exchange spin giant resonances

Details Direct-decay properties of charge-exchange spin giant resonances Direct-decay properties of charge-exchange spin giant resonances

2000-08-30

arxiv.org/abs/nucl-th/0008062v1

Nucl.Phys. A687 (2001) 276-281

Physics

Nuclear Physics

Nuclear Theory

6 pages, 2 figures, Talk given at the International Conference on Giant Resonances (GR2000),June 2000, Osaka, Japan

Scientific paper

10.1016/S0375-9474(01)00632-7

An extended continuum-RPA approach is applied to describe direct-decay properties of spin giant resonances in $^{208}$Bi and $^{90}$Nb. Partial branching ratios for direct proton decay from these resonances are evaluated. The branching ratio for $\gamma$-decay from the spin-dipole resonance to the Gamow-Teller resonance (main peak) is estimated. The saturation-like behaviour of the mean doorway-state spreading width in $^{208}$Pb is discussed in connection with the branching ratio for direct proton decay from the spin-monopole resonance and the Gamow-Teller strength distribution.

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