Physics NotePublished
Nonlocality Effect in Alpha Decay of Heavy and Superheavy Nuclei
Emil de Lima Medeiros; N. Teruya; S. B. Duarte; O. A. P. Tavares
Publication details
- Authors
- Emil de Lima Medeiros; N. Teruya; S. B. Duarte; O. A. P. Tavares
- Type
- Physics Note
- Status
- Published
- Publication date
- 02/08/2022
- Description
- Alpha decay half-life of heavy and superheavy nuclei has been investigated using a potential barrier penetration model that adapts semiclassical WKB calculations to incorporate a coordinate-dependent effective mass for the alpha particle. This effect is a consequence of a dynamic property of nonlocality in the particle-nucleus interaction, as implemented in the barrier tunneling calculations of Ref. \cite{Pemitter}. Calculations have been performed for a recent set of experimental data of 255 alpha-emitting nuclides, all selected with angular momentum $\ell = 0$ experimentally assigned. Results show a good agreement when compared to experimental half-life data, obtaining a standard deviation $\sigma=0.306$, and fully satisfying the universal NUP and UDL systematics of alpha decay. Additionally, the present model has been applied to make half-life predictions for thirty-four possible, new alpha decay cases.
- Year
- 2022
- Number
- CBPF-NF-005/22
- Linked to a thesis
- No
- Linked to a grant
- No