An improved nuclear mass formula: WS3

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 super-heavy 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.

9 pages, 6 figures, a talk given by Ning Wang at the 11th International Conference on Nucleus-Nucleus Collisions (NN2012), San Antonio, Texas, USA, May 27-June 1, 2012. To appear in the NN2012 Proceedings in Journal of Physics: Conference Series (JPCS)

References in corpus (16)

• Nuclear Ground-State Masses and Deformations
• Microscopic mass formulae
• Skyrme-Hartree-Fock-Bogoliubov nuclear mass formulas: Crossing the 0.6 MeV threshold with microscopically deduced pairing
• Symmetry Energy I: Semi-Infinite Matter
• Further improvements on a global nuclear mass model
• Potential Energy Surfaces of Actinide Nuclei from a Multi-dimensional Constraint Covariant Density Functional Theory: Barrier Heights and Saddle Point Shapes
• Modification of mass formula by considering isospin effects
• Mirror nuclei constraint in mass formula
• Dynamical r-process studies within the neutrino-driven wind scenario and its sensitivity to the nuclear physics input
• Nuclear mass predictions with radial basis function approach
• Applications of Skyrme energy-density functional to fusion reactions spanning the fusion barriers
• Systematics of fusion probability in "hot" fusion reactions
• Nuclear symmetry energy at subnormal densities from measured nuclear masses
• Application of the RMF mass model to the r-process and the influence of mass uncertainties
• Mass and isospin dependence of symmetry energy coefficients of finite nuclei
• Nuclear masses, deformations and shell effects

Cited by in corpus (7)

• Neutron Star Mergers and Nucleosynthesis of Heavy Elements
• Radial basis function approach in nuclear mass predictions
• Nuclear Mass Measurements Map the Structure of Atomic Nuclei and Accreting Neutron Stars
• Exploring the mass surface near the rare-earth abundance peak via precision mass measurements at JYFLTRAP
• Modification of magicity towards the dripline and its impact on electron-capture rates for stellar core-collapse
• Nuclear masses near N = Z from Nilsson-Strutinsky calculations with pairing corrections beyond BCS from an isospin-conserving pairing force
• Improvement in a phenomenological formula for ground state binding energies