Systematic Calculations of α-Decay Half-Lives Using Microscopic Deformed Potentials

摘要

A new version of the generalized density-dependent cluster model (GDDCM) is de-veloped to describe an α particle tunneling through a deformed potential barrier.The microscopic deformed potential is numerically constructed in the double-folding model using the multipole ex-pansion method.The decay width of an α-cluster state is evaluated using the integral of the quasi-bound state wave function,the scattering state wave function,and the difference of poten-tials.We perform a systematic calculation of α-decay half-lives for favored transitions in even-even nuclei ranging from Z=52 to Z=104.The calculated half-lives are in good agreement with the experimental values.The relation between nuclear deformations and α-decay half-lives is also discussed in details.