Coupled-channels treatment of deformed proton emitters

The structure of deformed proton emitters is studied in a coupled-channels treatment. The wave function of a decaying state is determined as a standing wave. i.e., for an energy that is real. The decay rate is calculated from a Green's function method, treating the influence of the long-range Coulomb multipole interactions to first order. The results are compared to predictions made in the adiabatic limit and to measurements. It is shown that the decay of the Eu-131(3/2(+)) ground state to the ground stale of Sm-130 is quite sensitive to deformation in the spin-orbit force. It is found that the ground state decay of Ho-141(7/2(-)) is poorly described in the coupled-channels approach. This is ascribed to Coriolis mixing, which is too strong in the absence of pairing effects.