Nuclear Ground-State Masses and Deformations

Abstract

We tabulate the atomic mass excesses and nuclear ground-state deformations of 8979 nuclei ranging from 16 O to A = 339. The calculations are based on the finite-range droplet macroscopic model and the folded-Yukawa single-particle microscopic model. Relative to our 1981 mass table the current results are obtained with an improved macroscopic model, an improved pairing model with a new form for the effective-interaction pairing gap, and minimization of the ground-state energy with respect to additional shape degrees of freedom. The values of only 9 constants are determined directly from a least-squares adjustment to the ground-state masses of 1654 nuclei ranging from 16 O to 263 106 and to 28 fission-barrier heights. The error of the mass model is 0.669 MeV for the entire region of nuclei considered, but is only 0.448 MeV for the region above N = 65.

Nuclear mass predictions for the crustal composition of neutron stars: A Bayesian neural network approach

“…(16) for a representative set of sophisticated mass models are displayed in Table II. These include the microscopic-macroscopic mass models of Duflo and Zuker (DZ) [11], Möller and Nix (MN) [8,9], and the finite range droplet model (FRDM) [10], alongside the two accurately calibrated microscopic models HFB19 and HFB21 [12]. As shown in Table II, for all these five mass models the root mean square deviation-denoted as σ pre -falls in the range of 0.5-1 MeV.…”

“…One of them-the so-called microscopic-macroscopic ("mic-mac") model-incorporates microscopic corrections to account for the physics that is missing from the most sophisticated macroscopic models. Mic-mac approaches have enjoyed their greatest success in the work of Möller et al [8][9][10] and Duflo and Zuker [11]. The second theoretical approach, falling under the general classification of microscopic mean-field models, relies on an energy density functional that is motivated by well known features of the nuclear dynamics.…”

High-spin structure,Kisomers, and state mixing in the neutron-rich isotopes173Tm and175Tm

“…[43] while deformation parameters for thulium isotopes from A =171-175 were taken from Ref. [44]. Single-particle…”

Spin-Down of Neutron Stars and Compositional Transitions in the Cold Crustal Matter

“…The masses of the remaining atoms are taken from the droplet (FRDM) mass table of Möller et al (1995). We note that the matter model described above is the same as that of Haensel & Pichon (1994) except some minor differences concerning the electronic contribution to binding energies, the electron exchange energies, and the electron-screening effects.…”