Deformation of nuclei close to the two neutron dripline in Mg region - INSPIRE

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Deformation of nuclei close to the two neutron dripline in Mg region

Dec, 1996

13 pages

Published in:

Nucl.Phys.A 621 (1997) 706

e-Print:

nucl-th/9612058 [nucl-th]

DOI:

10.1016/S0375-9474(97)00183-8

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Abstract:

We perform the Hartree-Fock-Bogoliubov (HFB) calculations for ground states of even Mg isotopes using the Skyrme force and a density-dependent zero-range pairing force. The HFB equation is solved in a three-dimensional cartesian mesh, and a convergence of deformation is carefully examined with respect to a cut-off radius for a check of the calculations. We discuss systematics of the two-neutron separation energy, deformation and root-mean-square radius. We have found that 36,38,40Mg have appreciable static deformation, where 40Mg is a two-neutron drip-line nucleus in our calculation, and the deformations of the neutron and proton are different in these three nuclei. The deformation property is analyzed on the basis of the single-particle diagram. It is shown that N=28 is not a closed shell in Mg as well as Si.

21.10.Dr
21.10.Pc
21.60.Jz
27–30+t
2740+z
Nuclei far from stability
Hartree-Fock-Bogoliubov method for deformed nuclei
S 2n and quadrupole moments for Mg isotopes
S2n and quadrupole moments for Mg isotopes

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