The decay rate of a triaxially deformed proton emitter is calculated in a particle-rotor model, which is based on a deformed Woods-Saxon potential and includes a deformed spin-orbit interaction. The wave function of the $I=7∕2^{-}$ ground state of the deformed proton emitter ${}^{141}\mathrm{Ho}$ is obtained in the adiabatic limit, and a Green’s function technique is used to calculate the decay rate and branching ratio to the first excited $2^{+}$ state of the daughter nucleus. Only for values of the triaxial angle $\gamma <5°$ is good agreement obtained for both the total decay rate and the $2^{+}$ branching ratio.

• Received 7 November 2003

DOI:https://doi.org/10.1103/PhysRevC.69.034314