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Direct-decay properties of charge-exchange spin giant resonances

V. A. Rodin, M. H. Urin

nucl-tharXiv:nucl-th/0008062

Abstract

An extended continuum-RPA approach is applied to describe direct-decay properties of spin giant resonances in 208Bi and 90Nb. 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 208Pb 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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