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arXiv · 0903.0792

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

Falih Al-Khudair·Gui-Lu Long·Yang Sun
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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.

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Falih Al-Khudair, Gui-Lu Long, Yang Sun. 2009-03-04. Competition in rotation-alignment between high-j neutrons and protons in transfermium nuclei. https://doi.org/10.1103/physrevc.79.034320

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