Beta Decay as a Test of theSr883−Wave Function

Allowed $\Delta T=1\mathrm{}$ Gamow-Teller $\beta$ decay from the ${\mathrm{Rb}}^{88}$ $2^{-}$ ground state to the ${\mathrm{Sr}}^{88}$ $3^{-}$ level at 2.73 MeV is calculated. A one-particle-one-hole description of the latter state requires the ${\left[2\mathrm{}{p}_{\frac{1}{2}}^{-1\mathrm{}}\mathrm{}\right(n\left)2d_{\frac{5}{2}}\mathrm{}\right(n\left)\right]}_{T=6\mathrm{}}^{J=3^{-}}$ component in order to predict the observed $log\mathrm{ft}$ value of 6.7. The decay rate is extremely sensitive to the amplitude of this term.