RadiativeE1Decay of Analog States inY89

A study of the dipole spectrum of analog states in ${\mathrm{Y}}^{89}$ is presented. Both ground-state decays and transitions to the second excited ${\frac{3}{2}}^{-}$ state are discussed. The angular momentum and parity quantum numbers of the levels under consideration are ${\frac{1}{2}}^{+}$, ${\frac{3}{2}}^{+}$, and ${\frac{5}{2}}^{+}$. As in previous work in even-even nuclei, most of the radiative strength is found concentrated in the high-energy region of the spectrum.