Rotational properties of $^{252, 253, 254}$No. Influence of pairing correlations

Details Rotational properties of $^{252, 253, 254}$No. Influence of pairing correlations Rotational properties of $^{252, 253, 254}$No. Influence of pairing correlations

2000-05-15

arxiv.org/abs/nucl-th/0005040v1

Nucl.Phys. A679 (2001) 427-440

Physics

Nuclear Physics

Nuclear Theory

19 pages, 10 figures, Latex file

Scientific paper

10.1016/S0375-9474(00)00370-5

Rotational bands of $^{252, 253, 254}$No and the fission barriers of $^{254}$No at spin 0$\hbar$ and 20$\hbar$ are calculated with the Hartree-Fock-Bogolyubov theory and the Lipkin-Nogami approximate particle number projection. The SLy4 Skyrme force is used in the particle-hole channel. A zero-range force with and without density-dependence is used in the particle-particle channel. The experimental ground state deformation (${\cal{Q}}_{20}$ = 32.8 b) is reproduced as well as the increase of the dynamical moment of inertia with frequency both for $^{252}$No and $^{254}$No. The rotational band of $^{253}$No is also calculated. Fission barriers of $^{254}$No at spin 0$\hbar$ and 20$\hbar$ show the robustness of shell-corrections against rotation in these heavy nuclei.

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