gamma-vibrational states in superheavy nuclei

Abstract

Recent experimental advances have made it possible to study excited structure in superheavy nuclei. The observed states have often been interpreted as quasi-particle excitations. We show that in superheavy nuclei collective vibrations systematically appear as low-energy excitation modes. By using the microscopic Triaxial Projected Shell Model, we make a detailed prediction on gamma-vibrational states and their E2 transition probabilities to the ground state band in Fermium and Nobelium isotopes where active structure research is going on, and in 270Ds, the heaviest isotope where decay data have been obtained for the ground-state and for an isomeric state.

5 pages, 4 figures, accepted for publication in Phys. Rev. C

References in corpus (9)

• Nuclear Ground-State Masses and Deformations
• Cranked Relativistic Hartree-Bogoliubov Theory: probing the gateway to superheavy nuclei
• Enhanced Stability of Superheavy Nuclei due to High-Spin Isomerism
• Triaxial projected shell model approach
• Skyrme mean-field study of rotational bands in transfermium isotopes
• Rotational properties of ${}^{252,253,254}$No. Influence of pairing correlations
• Multi-Phonon $\gamma$-Vibrational Bands and the Triaxial Projected Shell Model
• Transition quadrupole moments in gamma-soft nuclei and the triaxial projected shell model
• Nuclear magnetic dipole properties and the triaxial deformation

Cited by in corpus (11)

• Systematic investigation of the rotational bands in nuclei with $Z\approx 100$ using a particle-number conserving method based on a cranked shell model
• Nature of $\gamma$-deformation in Ge and Se nuclei and the triaxial projected shell model description
• Microscopic nuclear structure models and methods : Chiral symmetry, Wobbling motion and $\gamma -$bands
• Multi-phonon $\gamma$-vibrational bands in odd-mass nuclei studied by triaxial projected shell model approach
• Understanding the different rotational behaviors of ${}^{252}$No and ${}^{254}$No
• Competition in rotation-alignment between high-j neutrons and protons in transfermium nuclei
• Unified description of rotational-, $\gamma$-, and quasiparticle-band structures in neutron-rich mass $\sim$ 110 region
• Intrinsic properties of high-spin band structures in triaxial nuclei
• Emergence of High-Order Deformation in Rotating Transfermium Nuclei: A Microscopic Understanding
• Projected shell model description of nuclear level density: Collective, pair-breaking, and multiquasiparticle regimes in even-even nuclei
• Ground-state properties and structure evolutions of odd-$A$ transuranium Bk isotopes from deformed relativistic Hartree-Bogoliubov theory in continuum