Proton decay from ${}^{151}\mathrm{Lu}$ is analyzed in the perspective of decay from a deformed nucleus. The experimental values of the half-life for decay from the ground state and the recently found isomeric state are very well described as decay from a ${K=5/2\mathrm{}}^{-}$ ground state and a ${K=3/2\mathrm{}}^{+}$ isomeric state with an oblate deformation -0.18<β<-0.14. With this deformation one is able to describe consistently both decays, using the correct spectroscopic factors, which is not possible in a spherical interpretation.

• Received 7 September 1999

DOI:https://doi.org/10.1103/PhysRevC.61.021304