6533b7dbfe1ef96bd126f811
RESEARCH PRODUCT
Structure of transactinide nuclei with relativistic energy density functionals
Dario VretenarTamara NikšićV. PrassaV. Prassasubject
Nuclear and High Energy PhysicsNuclear TheoryTransactinide element01 natural sciencesenergy density functionalsSeparable spacesymbols.namesake0103 physical sciences010306 general physicsPhysicsta114010308 nuclear & particles physicsObservablecollective modelstransactinide nuclei ; energy density functionals ; collective modelsNATURAL SCIENCES. Physics.PRIRODNE ZNANOSTI. Fizika.transactinide nucleiTheoretical nuclear physicsPairingNeutron numberQuadrupolesymbolsAtomic physicsHamiltonian (quantum mechanics)Axial symmetrydescription
A microscopic theoretical framework based on relativistic energy density functionals (REDFs) is applied to studies of shape evolution, excitation spectra, and decay properties of transactinide nuclei. Axially symmetric and triaxial relativistic Hartree-Bogoliubov (RHB) calculations, based on the functional DD-PC1 and with a separable pairing interaction, are performed for the even-even isotopic chains between Fm and Fl. The occurrence of a deformed shell gap at neutron number $N=162$ and its role on the stability of nuclei in the region around $Z=108$ is investigated. A quadrupole collective Hamiltonian, with parameters determined by self-consistent constrained triaxial RHB calculations, is used to examine low-energy spectra of No, Rf, Sg, Hs, and Ds with neutron number in the interval $158\ensuremath{\le}N\ensuremath{\le}170$. In particular, we analyze the isotopic dependence of several observables that characterize the transitions between axially symmetric rotors, $\ensuremath{\gamma}$-soft rotors, and spherical vibrators. An interesting example of a possible occurrence of shape-phase transitions and critical-point phenomena in this mass region is explored.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-10-21 |