α-Decay half-lives, α-capture, and α-nucleus potential

α -Decay half-lives and α -capture cross sections are evaluated in the framework of a unified model for α -decay and α -capture. In this model α -decay and α -capture are considered as penetration of the α -particle through the potential barrier formed by the nuclear, Coulomb, and centrifugal interactions between the α -particle and nucleus. The spins and parities of the parent and daughter nuclei as well as the quadrupole and hexadecapole deformations of the daughter nuclei are taken into account for evaluation of the α -decay half-lives. The α -decay half-lives for 344 nuclei and the α -capture cross sections of 40Ca, 44Ca, 59Co, 208Pb, and 209Bi agree well with the experimental data. The evaluated α -decay half-lives within the range of 10 - 9 ⩽ T 1 / 2 ⩽ 10 38 s for 1246 α -emitters are tabulated.