Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas. VII. Simultaneous fits to masses and fission barriers

Goriely, Stéphane; Samyn, M.; Pearson, J. M.

doi:10.1103/physrevc.75.064312

Cited by 312 publications

(383 citation statements)

References 23 publications

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“…For comparison, we also list the empirical barrier heights from the Reference Input Parameter Library (RIPL-3) [80]; the HFB fission barriers obtained by fitting the neutron-induced fission cross section [81]; and predictions of ETFSI [82], FRLDM [83], and HFB-14 [31] models, together with hfodd calculations with the SkM * EDF. (For SkM * predictions including the energy correction due to the rotational zero-point motion, see Ref.…”

Section: Superdeformed States and Fission Barriersmentioning

confidence: 99%

“…However, this fine-tuning again was not done directly at the HFB level but by a manual readjustment of the surface coefficient of the EDF using a phenomenological model. Also, in the Bsk14 EDF of the HFB-14 mass model [31] by the Bruxelles-Montréal collaboration, data on fission barriers were utilized to optimize the EDF parameters by adding phenomenological collective corrections, including a rotational one. One may, therefore, conclude that no EDF has ever been systematically optimized at the deformed HFB level (and without phenomenological corrections added) by explicitly considering constraints on states at large deformations.…”

Section: Introductionmentioning

confidence: 99%

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Nuclear energy density optimization: Large deformations

et al. 2012

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A new Skyrme-like energy density suitable for studies of strongly elongated nuclei has been determined in the framework of the Hartree-Fock-Bogoliubov theory using the recently developed model-based, derivative-free optimization algorithm pounders. A sensitivity analysis at the optimal solution has revealed the importance of states at large deformations in driving the parameterization of the functional. The good agreement with experimental data on masses and separation energies, achieved with the previous parameterization unedf0, is largely preserved. In addition, the new energy density unedf1 gives a much improved description of the fission barriers in 240 Pu and neighboring nuclei.

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Section: Superdeformed States and Fission Barriersmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Nuclear energy density optimization: Large deformations

et al. 2012

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“…With macroscopic-microscopic models, precise descriptions of nuclear masses have been achieved [7][8][9][10][11][12][13][14]. Based on the non-relativistic density functional theory (DFT), a series of Hartree-Fock-Bogoliubov mass models has been developed [15][16][17][18][19]. Recently, to explore the limit of the nuclear landscape and to estimate theoretical uncertainties in drip lines, the Skyrme-DFT calculations with six different parametrizations have been performed, and approximately 7000 bound nuclei with Z ≤120 were predicted [20].…”

Section: Introductionmentioning

confidence: 99%

The limits of the nuclear landscape explored by the relativistic continuum Hartree–Bogoliubov theory

Xia

Lim

Zhao

et al. 2018

Atomic Data and Nuclear Data Tables

181

126

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The ground-state properties of nuclei with 8 Z 120 from the proton drip line to the neutron drip line have been investigated using the spherical relativistic continuum Hartree-Bogoliubov (RCHB) theory with the relativistic density functional PC-PK1. With the effects of the continuum included, there are totally 9035 nuclei predicted to be bound, which largely extends the existing nuclear landscapes predicted with other methods. The calculated binding energies, separation energies, neutron and proton Fermi surfaces, root-mean-square (rms) radii of neutron, proton, matter, and charge distributions, ground-state spins and parities are tabulated. The extension of the nuclear landscape obtained with RCHB is discussed in detail, in particular for the neutron-rich side, in comparison with the relativistic mean field calculations without pairing correlations and also other predicted landscapes. It is found that the coupling between the bound states and the continuum due to the pairing correlations plays an essential role in extending the nuclear landscape.The systematics of the separation energies, radii, densities, potentials and pairing energies of the RCHB calculations are also discussed. In addition, the α-decay energies and proton emitters based on the RCHB calculations are investigated.

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“…According to the HFB-14 model [15], on the neutron-rich side the bound isotopes should reach at least up to 148 Pd while on the neutron deficient side six more isotopes should be particle stable ( 85−90 Pd).…”

Section: Discovery Of 91−128 Pdmentioning

confidence: 99%

“…According to the HFB-14 model [15], 172 Sb should be the last odd-odd particle stable neutron-rich nucleus while the even-odd particle stable neutron-rich nuclei should continue through 177 Sb. The proton dripline has been crossed with the observation of the proton emitter 105 Sb, however, 102 Sb, 101 Sb, and 100 Sb could still have half-lives longer than 10 −9 s [47].…”

Section: Discovery Of 103−140 Sbmentioning

confidence: 99%