Rod-shaped Nuclei at Extreme Spin and Isospin

Abstract

The anomalous rod shape in carbon isotopes has been investigated in the framework of the cranking covariant density functional theory, and two mechanisms to stabilize such a novel shape with respect to the bending motion, extreme spin, and isospin, are simultaneously discussed for the first time in a self-consistent and microscopic way. By adding valence neutrons and rotating the system, we have found the mechanism stabilizing the rod shape; i.e., the $\sigma$ orbitals (parallel to the symmetry axis) of the valence neutrons, important for the rod shape, are lowered by the rotation due to the Coriolis term. The spin and isospin effects enhance the stability of the rod-shaped configuration. This provides a strong hint that a rod shape could be realized in nuclei towards extreme spin and isospin.

arXiv comment12 pages, 5 figures, accepted in Physical Review Letters

References in corpus (12)

• Alpha cluster condensation in 12C and 16O
• Progress on tilted axis cranking covariant density functional theory for nuclear magnetic and antimagnetic rotation
• Antimagnetic Rotation Band in Nuclei: A Microscopic Description
• Novel structure for magnetic rotation bands in 60Ni
• Molecular-orbital structure in neutron-rich C isotopes
• Covariant density functional theory for antimagnetic rotation
• Linear chain structure of four-$\alpha$ clusters in ${}^{16}$O
• Density Functional Theory studies of cluster states in nuclei
• One-dimensional $\alpha$ condensation of $\alpha$-linear-chain states in ${}^{12}\mathrm{C}$ and ${}^{16}\mathrm{O}$
• Beyond mean-field description of the low-lying spectrum of 16O
• 3alpha clustering in the excited states of 16C
• Searching for 4$\alpha$ linear-chain structure in excited states of ${}^{16}$O with a covariant density functional theory

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