Potential energy surfaces of actinide and transfermium nuclei from multi-dimensional constraint covariant density functional theories

Abstract

Multi-dimensional constrained covariant density functional theories were developed recently. In these theories, all shape degrees of freedom β_{λμ} deformations with even μare allowed, e.g., β_{20}, β_{22}, β_{30}, β_{32}, β_{40}, β_{42}, β_{44}, and so on and the CDFT functional can be one of the following four forms: the meson exchange or point-coupling nucleon interactions combined with the non-linear or density-dependent couplings. In this contribution, some applications of these theories are presented. The potential energy surfaces of actinide nuclei in the (β_{20}, β_{22}, β_{30}) deformation space are investigated. It is found that besides the octupole deformation, the triaxiality also plays an important role upon the second fission barriers. The non-axial reflection-asymmetric β_{32} shape in some transfermium nuclei with N = 150, namely 246Cm, 248Cf, 250Fm, and 252No are studied.

7 pages, 6 figures; invited talk at the International Conference on Nuclear Structure and Related Topics, Jul 02-July 7, 2012, Dubna

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Cited by in corpus (8)

• Multidimensionally-constrained relativistic mean field models and potential energy surfaces of actinide nuclei
• Multidimensionally-constrained covariant density functional theories --- nuclear shapes and potential energy surfaces
• Multidimensionally-constrained relativistic mean-field study of triple-humped barriers in actinides
• Tetrahedral shapes of neutron-rich Zr isotopes from multidimensionally-constrained relativistic Hartree-Bogoliubov model
• Angular momentum and parity projected multidimensionally constrained relativistic Hartree-Bogoliubov model
• Multi-dimensional constraint relativistic mean field model and applications in actinide and transfermium nuclei
• Symmetry restoration methods
• Multi-dimensional potential energy surfaces and non-axial octupole correlations in actinide and transfermium nuclei from relativistic mean field models