Competition in rotation-alignment between high-j neutrons and protons in transfermium nuclei

Abstract

The study of rotation-alignment of quasiparticles probes sensitively the properties of high-j intruder orbits. The distribution of very high-j orbits, which are consequences of the fundamental spin-orbit interaction, links with the important question of single-particle levels in superheavy nuclei. With the deformed single-particle states generated by the standard Nilsson potential, we perform Projected-Shell-Model calculations for transfermium nuclei where detailed spectroscopy experiment is currently possible. Specifically, we study the systematical behavior of rotation-alignment and associated band-crossing phenomenon in Cf, Fm, and No isotopes. Neutrons and protons from the high-j orbits are found to compete strongly in rotation-alignment, which gives rise to testable effects. Observation of these effects will provide direct information on the single-particle states in the heaviest nuclear mass region.

9 pages, 5 figures

References in corpus (7)

• 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
• Skyrme mean-field study of rotational bands in transfermium isotopes
• Rotational properties of ${}^{252,253,254}$No. Influence of pairing correlations
• Anomalous Crossing Frequency in Odd Proton Nuclei
• gamma-vibrational states in superheavy nuclei

Cited by in corpus (8)

• Systematic investigation of the rotational bands in nuclei with $Z\approx 100$ using a particle-number conserving method based on a cranked shell model
• Rotational properties of the superheavy nucleus 256Rf and its neighboring even-even nuclei in particle-number conserving cranked shell model
• Particle-number conserving analysis of rotational bands in 247,249Cm and 249Cf
• Understanding the different rotational behaviors of ${}^{252}$No and ${}^{254}$No
• 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
• Description of collective and quasiparticle excitations in deformed actinide nuclei: The first application of the Heavy Shell Model