Abstract
A new averaging process of the calculation of α-decay half-lives for heavy and superheavy nuclei is studied in the framework of a deformed density-dependent cluster model. The potential between a spherical α particle and a deformed daughter nucleus is calculated numerically from the double-folding model by the multipole expansion method. The nuclear potential is calculated at each α-particle emission angle applying the Bohr-Sommerfeld condition at each case. The penetration factors and the half-lives for all the emission angles are evaluated with the new averaging process and compared with older values based on a fixed value of the nuclear potential depth. Finally, the half-lives of 83 even-even heavy nuclei in the atomic-number range 82–118 are calculated by the two methods and compared with their experimental values and the corresponding half-lives of the spherical daughter nuclei.
- Received 11 July 2011
DOI:https://doi.org/10.1103/PhysRevC.86.044317
©2012 American Physical Society