Systematic calculation of fine structure in the α decay of deformed nuclei

We perform an extensive investigation on the a decay of well-deformed even-even nuclei by using the coupled-channel Schrödinger equation with outgoing wave boundary conditions. The internal effect of daughter states is taken into account in dealing with the interaction matrix and the α-cluster formation. In contrast to the traditional α-decay theories, the five-channel microscopic calculations of this work well reproduce the available experimental data concerning α-decay half-lives and fine structures. Some predictions on the fine structure are made for superheavy nuclei. Moreover, the sensitivity of the results to the model quantities is discussed in detail.