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Deformation of nuclei close to the two-neutron drip line in the Mg region

✍ Scribed by J. Terasaki; H. Flocard; P.-H. Heenen; P. Bonche

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 646 KB
Volume: 621
Category: Article
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(97)00183-8

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✦ Synopsis

We present Hartree-Fock-Bogoliubov (HFB) calculations of the ground states of even Mg isotopes. A Skyrme force is used in the mean-field channel and a density-dependent zero-range force in the pairing channel. 4°Mg and 2°Mg are predicted to be at the two-neutron and twoproton drip lines respectively. A detailed study of the quadrupole deformation properties of all the isotopes shows that the ground states of 36'38'4°Mg are strongly deformed with significantly different deformations for the neutrons and protons. Our study supports the disappearance of the N = 28 shell gap in the Mg and Si isotopes. ~) 1997 Elsevier Science B.V.

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