Primary fission fragment mass yields across the chart of nuclides

Abstract

We have calculated a complete set of primary fission fragment mass yields, $Y(A)$, for heavy nuclei across the chart of nuclides, including those of particular relevance to the rapid neutron capture process ($r$ process) of nucleosynthesis. We assume that the nuclear shape dynamics are strongly damped which allows for a description of the fission process via Brownian shape motion across nuclear potential-energy surfaces. The macroscopic energy of the potential was obtained with the Finite-Range Liquid-Drop Model (FRLDM), while the microscopic terms were extracted from the single-particle level spectra in the fissioning system by the Strutinsky procedure for the shell energies and the BCS treatment for the pairing energies. For each nucleus considered, the fission fragment mass yield, $Y(A)$, is obtained from 50,000 -- 500,000 random walks on the appropriate potential-energy surface. The full mass and charge yield, $Y(Z,A)$, is then calculated by invoking the Wahl systematics. With this method, we have calculated a comprehensive set of fission-fragment yields from over 3,800 nuclides bounded by $80\le Z\le 130$ and $A\le 330$; these yields are provided as an ASCII formatted database in the supplemental material. We compare our yields to known data and discuss general trends that emerge in low-energy fission yields across the chart of nuclides.

arXiv comment22 pages, 15 figures

References in corpus (37)

• Nuclear Ground-State Masses and Deformations
• Nuclear ground-state masses and deformations: FRDM(2012)
• Microscopic Theory of Nuclear Fission: A Review
• Microscopic approach of fission dynamics applied to fragment kinetic energy and mass distributions in 238U
• Induced Fission of ${}^{240}$Pu within a Real-Time Microscopic Framework
• The Origin of r-Process Elements in the Milky Way
• Brownian shape motion on five-dimensional potential-energy surfaces: Nuclear fission-fragment mass distributions
• The Role of Fission in Neutron Star Mergers and its Impact on the r-Process Peaks
• Review on the progress in nuclear fission
• r-Process Nucleosynthesis: Connecting Rare-Isotope Beam Facilities with the Cosmos
• Selfconsistent calculations of fission barriers in the Fm region
• Five-Dimensional Fission-Barrier Calulations from Se-70 to Cf-252
• Fission fragment charge and mass distributions in 239Pu(n,f) in the adiabatic nuclear energy density functional theory
• Fission-fragment mass distributions from strongly damped shape evolution
• Description of Induced Nuclear Fission with Skyrme Energy Functionals: I. Static Potential Energy Surfaces and Fission Fragment Properties
• Fission Dynamics of 240Pu from Saddle-to-Scission and Beyond
• Fission properties of superheavy nuclei for r-process calculations
• Using excitation-energy dependent fission yields to identify key fissioning nuclei in r-process nucleosynthesis
• $\beta$-delayed fission in $r$-process nucleosynthesis
• Actinide Production in Neutron-Rich Ejecta of a Neutron Star Merger
• Numerical search of discontinuities in self-consistent potential energy surfaces
• From Asymmetric to Symmetric Fission in the Fermium Isotopes within the Time-Dependent GCM Formalism
• Correlated transitions in TKE and mass distributions of fission fragments described by 4-D Langevin equation
• Correlated Prompt Fission Data in Transport Simulations
• Fission modes of 256Fm and 258Fm in a microscopic approach
• Error Analysis in Nuclear Density Functional Theory
• Transport coefficients for shape degrees in terms of Cassini ovaloids
• The Scission-Point Configuration within the Two-Center Shell Model Shape Parameterization
• FELIX-2.0: New version of the finite element solver for the time dependent generator coordinate method with the Gaussian overlap approximation
• A Method to Calculate Fission-Fragment Yields $Y(Z,N)$ versus Proton and Neutron Number in the Brownian Shape-Motion Model. Application to calculations of U and Pu charge yields
• Number of Particles in Fission Fragments
• Fission of heavy $\Lambda$ hypernuclei with the Skyrme-Hartree-Fock approach
• Hauser-Feshbach fission fragment de-excitation with calculated macroscopic-microscopic mass yields
• Calculated fission-fragment mass yields and average total kinetic energies of heavy and superheavy nuclei
• Microscopic description of pair transfer between two superfluid systems (II): a quantum mixing of Time-Dependent Hartree-Fock Bogolyubov trajectories
• ${}^{235}$U(n, f) Independent Fission Product Yield and Isomeric Ratio Calculated with the Statistical Hauser-Feshbach Theory
• Fission modes in fermium isotopes with Brownian shape-motion model

Cited by in corpus (32)

• Origin of the Heaviest Elements: the Rapid Neutron-Capture Process
• Theory of Nuclear Fission
• Kilonovae across the nuclear physics landscape: The impact of nuclear physics uncertainties on r-process-powered emission
• Fission Fragment Decay Simulations with the CGMF Code
• Nucleosynthesis and observation of the heaviest elements
• Co-production of light and heavy $r$-process elements via fission deposition
• Element abundance patterns in stars indicate fission of nuclei heavier than uranium
• Extension of the Hauser-Feshbach Fission Fragment Decay Model to Multi-Chance Fission
• Microscopic Calculation of Fission Product Yields with Particle Number Projection
• Following nuclei through nucleosynthesis: a novel tracing technique
• Fission of ${}^{240}$Pu with symmetry-restored density functional theory
• Optimizing multilayer Bayesian neural networks for evaluation of fission yields
• Efficient method for estimation of fission fragment yields of r-process nuclei
• Mass Yields of Fission Fragment of Pt to Ra Isotopes
• Theoretical description of fission yields: towards a fast and efficient global model
• Neck Rupture and Scission Neutrons in Nuclear Fission
• Potential energy surfaces and fission fragment mass yields of even-even superheavy nuclei
• Improvements to the macroscopic-microscopic approach of nuclear fission
• Neural Network Emulation of Spontaneous Fission
• Chemical Evolution of R-process Elements in Stars (CERES): IV. An observational run-up of the third r-process peak with Hf, Os, Ir, and Pt
• Isochronic evolution and the radioactive decay of r-process nuclei
• Correlations between energy and $\gamma$-ray emission in ${}^{239}\mathrm{Pu}(n,\mathrm{f})$
• Connection of four-dimensional Langevin model and Hauser-Feshbach theory to describe statistical decay of fission fragments
• Fission of 215Fr studied with gamma spectroscopic methods
• HD 222925: a New Opportunity to Explore the Astrophysical and Nuclear Conditions of r-process Sites
• R-process Nucleosynthesis of Subminimal Neutron Star Explosions
• Meaurement of spin vs. TKE of ${}^{144}$Ba produced in spontaneous fission of ${}^{252}$Cf
• Three-dimensional potential energy surface for fission of ${}^{236}$U within covariant density functional theory
• Recent Advances in Understanding R-Process Nucleosynthesis in Metal-Poor Stars and Stellar Systems
• Multimodal fission from self-consistent calculations
• Nuclear data activities for medium mass and heavy nuclei at Los Alamos
• A Nonequilibrium Information Entropy Approach to Ternary Fission of Actinides