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The magic number N=28 and the role of the spin-orbit interaction

Abstract : The N=28 shell closure is the first arising from the strong spin-orbit interaction. Therefore, the study of its evolution in nuclei with large neutron to proton excesses is intimately connected to the evolution of the spin-orbit interaction. From the doubly magic 48Ca nucleus to the close to drip line 42Si nucleus, a wealth of nuclear structure modifications is occurring, starting from spherical, prolate-spherical co-existence to oblate shapes. Using up to date experimental data along the N=28 isotonic chain, the underlying physics origin for these structural modifications will be emphasized. Among these, the action of tensor forces and the central density dependence of the spin-orbit interaction will be invoked.
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Submitted on : Friday, September 28, 2007 - 11:23:54 AM
Last modification on : Thursday, February 1, 2018 - 1:35:40 AM
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  • HAL Id : in2p3-00163281, version 1



O. Sorlin. The magic number N=28 and the role of the spin-orbit interaction. The International Symposium on Physics of Unstable Nuclei (ISPUN07), Jul 2007, Hoi An, Vietnam. pp.386-393. ⟨in2p3-00163281⟩



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