Understanding the different rotational behaviors of ${}^{252}$No and ${}^{254}$No

Abstract

Total Routhian surface calculations have been performed to investigate rapidly rotating transfermium nuclei, the heaviest nuclei accessible by detailed spectroscopy experiments. The observed fast alignment in ${}^{252}$No and slow alignment in ${}^{254}$No are well reproduced by the calculations incorporating high-order deformations. The different rotational behaviors of ${}^{252}$No and ${}^{254}$No can be understood for the first time in terms of ${\beta }_6$ deformation that decreases the energies of the $\nu j_{15/2}$ intruder orbitals below the N=152 gap. Our investigations reveal the importance of high-order deformation in describing not only the multi-quasiparticle states but also the rotational spectra, both providing probes of the single-particle structure concerning the expected doubly-magic superheavy nuclei.

arXiv comment5 pages, 4 figures, the version accepted for publication in Phys. Rev. C

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Cited by in corpus (12)

• 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
• Pairing and rotational properties of actinides and superheavy nuclei in covariant density functional theory
• Properties of nuclei in the nobelium region studied within the covariant, Skyrme, and Gogny energy density functionals
• Rotational properties of the superheavy nucleus 256Rf and its neighboring even-even nuclei in particle-number conserving cranked shell model
• Rotational properties of nuclei around ${}^{254}$No investigated using a spectroscopic-quality Skyrme energy density functional
• Global calculations on the microscopic energies and nuclear deformations: Isospin dependence of the spin-orbit coupling
• Microscopic study of higher-order deformation effects on the ground states of superheavy nuclei around ${}^{270}$Hs
• Emergence of High-Order Deformation in Rotating Transfermium Nuclei: A Microscopic Understanding
• Rotational Properties of the Odd-$Z$ Transfermium Nucleus ${}^{255}$Lr by a Particle-number-conserving Method in the Cranked Shell Model
• Systematic investigation of the high-$K$ isomers and the high-spin rotational bands in the neutron rich Nd and Sm isotopes by a particle-number conserving method
• Ground-state properties and structure evolutions of odd-$A$ transuranium Bk isotopes from deformed relativistic Hartree-Bogoliubov theory in continuum