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- Title
Cluster properties of heavy nuclei predicted with the Barcelona-Catania-Paris-Madrid energy density functional.
- Authors
Giuliani, Samuel A.; Robledo, Luis M.
- Abstract
We study the cluster emission properties of 224 Ra and 238 Pu employing the Barcelona-Catania-Paris-Madrid (BCPM) energy density functional (EDF). Starting from two-dimensional potential energy surfaces, coexisting fission paths are identified. A fission valley located at large octupole deformations, corresponding to a highly-asymmetric mass distribution, is found in both nuclei. As the corresponding fragments are dominated by the presence of 208 Pb, we can relate this fission path to the emergence of cluster emission. Using the octupole moment as collective degree of freedom, we compute the cluster decay half-lives and study the impact of collective inertias, pairing strength and collective zero-point energy. The agreement with experimental data resembles the results obtained for spontaneous fission half-lives, indicating the capability of BCPM to consistently describe a large variety of fission phenomena, including cluster emission.
- Subjects
HEAVY nuclei; ENERGY density; POTENTIAL energy surfaces; GROUND state energy; DEGREES of freedom; RADIUM isotopes
- Publication
European Physical Journal A -- Hadrons & Nuclei, 2023, Vol 59, Issue 12, p1
- ISSN
1434-6001
- Publication type
Article
- DOI
10.1140/epja/s10050-023-01210-5