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Direct-decay properties of charge-exchange spin giant resonances

V. A. Rodin·M. H. Urin
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Abstract

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 $γ$-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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V. A. Rodin, M. H. Urin. 2000-08-30. Direct-decay properties of charge-exchange spin giant resonances. https://doi.org/10.1016/s0375-9474(01)00632-7

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