New deformed model of α-decay half-lives with a microscopic potential

The -decay half-lives of deformed nuclei are investigated in a new version of the density-dependent cluster model. By the multipole expansion method, the deformation- and orientation-dependent double-folding potential is derived to calculate the -decay width through a deformed Coulomb barrier. We perform systematic calculations for the ground-state transitions of even-even nuclei with Z=52-104. The theoretical results are in good agreement with the experimental data. This is, to our knowledge, the first deformed calculation of -decay half-lives within the framework of microscopic double-folding potentials. A unified description of -decay half-lives of both spherical and deformed nuclei is obtained by the microscopic potentials.