An improved nuclear mass formula: WS3
Ning Wang,Min Liu +1 more
- Vol. 420, Iss: 1, pp 012057
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TLDR
In this paper, a global nuclear mass formula based on the macroscopic microscopic method, the Skyrme energy-density functional and the isospin symmetry in nuclear physics is introduced.Abstract:
We introduce a global nuclear mass formula which is based on the macroscopic-microscopic method, the Skyrme energy-density functional and the isospin symmetry in nuclear physics. The rms deviation with respect to 2149 known nuclear masses falls to 336 keV, and the rms deviations from 1988 neutron separation energies and α-decay energies of 46 superheavy nuclei are significantly reduced to 286 and 248 keV, respectively. The predictive power of the mass formula for describing new measured masses in GSI and those in AME2011 is excellent. In addition, we introduce an efficient and powerful systematic method, radial basis function approach, for further improving the accuracy and predictive power of global nuclear mass models.read more
Citations
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Neutron Star Mergers and Nucleosynthesis of Heavy Elements
TL;DR: The existence of neutron star mergers has been supported since the discovery of the binary pulsar and the observation of its orbital energy loss, consistent with General Relativity as mentioned in this paper, which is considered nucleosynthesis sites of the rapid neutron capture process (r-process), which is responsible for creating approximately half of all heavy elements beyond Fe and is the only source of elements beyond Pb and Bi.
Journal ArticleDOI
Neutron Star Mergers and Nucleosynthesis of Heavy Elements
TL;DR: The existence of binary compact mergers has been supported since the discovery of the binary pulsar and the observation of its orbital energy loss, consistent with General Relativity as mentioned in this paper, and they are considered nucleosynthesis sites of the rapid neutron capture process (r-process), which is responsible for creating approximately half of all heavy elements beyond Fe and is the only source of elements beyond Pb and Bi.
Journal ArticleDOI
The impact of uncertain nuclear masses near closed shells on the r-process abundance pattern
TL;DR: In this paper, the influence of individual mass variations on three types of r-process simulations was examined, and the uncertainties in the abundance patterns due to the mass variations exceed the differences due to astrophysics.
Journal ArticleDOI
Modification of magicity toward the dripline and its impact on electron-capture rates for stellar core collapse
TL;DR: In this article, an empirical modification of the popular Duflo-Zuker mass model was introduced to account for possible shell quenching far from stability, and the effect of the quenched shells on the average electron capture rate was analyzed.
Journal ArticleDOI
Nuclear mass measurements map the structure of atomic nuclei and accreting neutron stars
Zach Meisel,Sebastian George,S. Ahn,D. Bazin,B. A. Brown,J. Browne,J. F. Carpino,H. Chung,Richard H. Cyburt,Alfredo Estrade,Michael Famiano,Alexandra Gade,C. Langer,Milan Matos,W. Mittig,Fernando Montes,David J. Morrissey,J. Pereira,Hendrik Schatz,J. Schatz,M. Scott,Dan Shapira,Karl Smith,J. Stevens,Wanpeng Tan,Oleg B. Tarasov,Sherry Towers,Kathrin Wimmer,J. R. Winkelbauer,John Yurkon,R. G. T. Zegers +30 more
TL;DR: In this paper, the mass excesses (ME) of neutron-rich isotopes of Ar through Fe, obtained via TOF-$B\rho$ mass spectrometry at the National Superconducting Cyclotron Laboratory, were determined.
References
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Journal ArticleDOI
Nuclear ground state masses and deformations
TL;DR: In this paper, the atomic mass excesses and nuclear ground-state deformations of 8979 nuclei ranging from 16O to A = 339 were tabulated based on the finite-range droplet macroscopic model and the folded-Yukawa single-particle microscopic model.
Journal ArticleDOI
The AME2003 atomic mass evaluation . (II). Tables, graphs and references
TL;DR: The second part of the new evaluation of atomic masses Ame 2003 is presented in this paper, where the results of a least squares calculation described in Part I for all accepted experimental data are derived here tables and graphs to replace those of 1993.
Journal ArticleDOI
Nuclear masses and deformations
W.D. Myers,W.J. Swiatecki +1 more
TL;DR: In this article, a semi-empirical theory of nuclear masses and deformations is presented, where the potential energy of a nucleus, considered as a function of N, Z and the nuclear shape, is given by the liquid-drop model, modified by a shell correction.
Journal ArticleDOI
Single-particle energies, wave functions, quadrupole moments and g-factors in an axially deformed woods-saxon potential with applications to the two-centre-type nuclear problems
TL;DR: In this article, single-particle energies and wave functions of an axially deformed Woods-Saxon potential are computed, and the nuclear shape is defined in terms of an expansion into sphericalharmonics.
Journal ArticleDOI
Microscopic mass formulas
J. Duflo,Andrés P. Zuker +1 more
TL;DR: The Bethe-Weizsaecker formula is shown to be the asymptotic limit of the present one(s), and the surface energy of nuclear matter turns out to be probably smaller than currently accepted.