Quadrupole deformations of neutron-drip-line nuclei studied within the Skyrme Hartree-Fock-Bogoliubov approach

Using the Hartree–Fock–Bogoliubov mean-field theory, the ground-state structural and decay properties of Nd isotopes are investigated from the proton-rich side up to the neutron drip-line. Quantities such as binding energies per nucleon, one and two-neutron separation energies, rms charge radii, and quadrupole deformation parameters have been calculated. Compared with the relativistic mean-field results, the present calculations are in better agreement with the available experimental data. The results show clearly the signature of a shape transition at [Formula: see text] and an abrupt increase in the deformation near the neutron drip-line. Further, the possible decay modes like alpha, cluster and [Formula: see text]-decay are analyzed in a unified fission model and phenomenological formulas. Overall, a good agreement is achieved between the calculated and experimental [Formula: see text]-values and half-lives wherever available. The most likely decay modes are thus identified throughout the isotopic chain.

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Coordinate space Hartree-Fock-Bogoliubov calculations for the zirconium isotope chain up to the two-neutron drip line

Physical Review C ◽

10.1103/physrevc.71.054321 ◽

2005 ◽

Vol 71 (5) ◽

Cited By ~ 45

Author(s):

A. Blazkiewicz ◽

V. E. Oberacker ◽

A. S. Umar ◽

M. Stoitsov

Keyword(s):

Drip Line ◽

Coordinate Space ◽

Neutron Drip Line ◽

Hartree Fock ◽

Isotope Chain

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Superdeformed structures and low Ω parity doublet in Ne-S nuclei near neutron drip-line

Open Physics ◽

10.2478/s11534-014-0426-2 ◽

2014 ◽

Vol 12 (1) ◽

Cited By ~ 1

Author(s):

Shailesh Singh ◽

Choudhury Praharaj ◽

Suresh Patra

Keyword(s):

Field Theory ◽

Mean Field Theory ◽

Mean Field ◽

Drip Line ◽

Parity Doublet ◽

Neutron Drip Line ◽

Hartree Fock ◽

Relativistic Mean Field ◽

Line Region ◽

Frame Work

AbstractThe structures of Ne, Na, Mg, Al, Si, P and S nuclei near the neutron drip-line region are investigated in the frame-work of relativistic mean field theory and non-relativistic Skyrme Hartree-Fock formalism. The recently discovered nuclei 40Mg and 42Al, which are beyond the drip-line predicted by various mass formulae are located within these models. We find many largely deformed neutron-rich nuclei, whose structures are analyzed. From the structure anatomy, we find that at large deformation low orbits of opposite parities (e.g. $$\frac{1} {2}^ +$$ and $$\frac{1} {2}^ -$$) occur close to each other in energy.

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Hartree-Fock-Bogolyubov description of nuclei near the neutron-drip line

Nuclear Physics A ◽

10.1016/0375-9474(84)90433-0 ◽

1984 ◽

Vol 422 (1) ◽

pp. 103-139 ◽

Cited By ~ 708

Author(s):

J. Dobaczewski ◽

H. Flocard ◽

J. Treiner

Keyword(s):

Drip Line ◽

Neutron Drip Line ◽

Hartree Fock

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COMPARISON OF RELATIVISTIC AND NON-RELATIVISTIC APPROACHES IN HALO

International Journal of Modern Physics E ◽

10.1142/s0218301306005381 ◽

2006 ◽

Vol 15 (08) ◽

pp. 1833-1841 ◽

Cited By ~ 1

Author(s):

JUN TERASAKI ◽

S. Q. ZHANG ◽

S. G. ZHOU ◽

J. MENG

Keyword(s):

Root Mean Square ◽

Shell Structure ◽

Drip Line ◽

Mean Square ◽

Neutron Drip Line ◽

Hartree Fock ◽

Neutron Rich Nucleus ◽

The Difference ◽

Two Parameter

The phenomena of giant halo and halo of neutron-rich even- Ca isotopes are investigated and compared in the framework of the relativistic continuum Hartree-Bogoliubov (RCHB) and non-relativistic Skyrme Hartree-Fock-Bogoliubov (HFB) calculations. With two parameter sets for each of the RCHB and the Skyrme HFB calculations, it is found that although halo phenomena exist for Ca isotopes near neutron drip line in both calculations, the halo of the Skyrme HFB calculations starts at a more neutron-rich nucleus than that of the RCHB calculations, and the RCHB calculations have larger neutron root-mean-square (rms) radii systematically in N ≥ 40 than those of the Skyrme HFB calculations. The former difference comes from difference in shell structure. The reasons for the latter can be partly explained by the neutron 3s1/2 orbit, which causes more than 50 % of the difference among the four calculations for neutron rms radii at 66 Ca .

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