Abstract

The branching ratios for E1 transitions between the spin-dipole (SD) and Gamow-Teller (GT) giant resonances in ${}^{90}\mathrm{Nb}$ and ${}^{208}\mathrm{Pb}$ are evaluated. Assuming the main GT state has a wave function close to that for the ``ideal'' GT state, we reduced the problem to calculate the SD and GT strength functions. These strength functions are evaluated within an extended continuum-random phase approximation approach.

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