Application of the relativistic mean-field mass model to ther-process and the influence of mass uncertainties

2007/10/31 by B. Sun, F. Montes, L. S. Geng +5 · 5 citations
Physics and Astronomy · #Astronomical and nuclear sciences #Computer graphics (images) #Computer science #Nuclear physics research studies #Physics #Radioactive Decay and Measurement Techniques #astro-ph #nucl-th

paper · pdf · doi:10.1103/physrevc.78.025806

published as Phys. Rev. C 78, 025806 (2008) · to be published in Phys. Rev. C, 22 pages, 9 figures

arxiv created 2008/07/16 · openalex publication_date 2008/08/21 · arxiv updated 2014/09/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

A new mass table calculated by the relativistic mean-field approach with the state-dependent BCS method for the pairing correlation is applied for the first time to study r-process nucleosynthesis. The solar r-process abundance is well reproduced within a waiting-point approximation approach. Using an exponential fitting procedure to find the required astrophysical conditions, the influence of mass uncertainty is investigated. The r-process calculations using the FRDM, ETFSI-Q, and HFB-13 mass tables have been used for that purpose. It is found that the nuclear physical uncertainty can significantly influence the deduced astrophysical conditions for the r-process site. In addition, the influence of the shell closure and shape transition have been examined in detail in the r-process simulations.

Citations

• Pseudospin as a Relativistic Symmetry
• Self-consistent mean-field models for nuclear structure
• Anomaly in the charge radii of Pb isotopes
• Pseudospin symmetry in Zr and Sn isotopes from the proton drip line to the neutron drip line
• Synthesis of the Elements in Stars
• Ther‐Process in Neutrino‐driven Winds from Nascent, “Compact” Neutron Stars of Core‐Collapse Supernovae
• Relativistic Continuum Hartree Bogoliubov Theory for Ground State Properties of Exotic Nuclei
• Masses, Deformations and Charge Radii--Nuclear Ground-State Properties in the Relativistic Mean Field Model

Cited by

• Calculation ofα-decay energies of superheavy nuclei in a hybrid method
• Positioning the neutron drip line and the r-process paths in the nuclear landscape
• Sensitivity Study of r-process Abundances to Nuclear Masses
• β-decay half-lives of neutron-rich nuclei and matter flow in the r-process
• New high-spin structure and possible chirality in In<mml:mprescripts/><mml:none/>109

Related

• The impact of uncertain nuclear masses near closed shells on ther-process abundance pattern
• Complete survey of r-process conditions: the (un-)robustness of the r-process(-es)
• The impact of global nuclear mass model uncertainties on r-process abundance predictions
• Nuclear masses near N=82 that influence r-process abundances
• Impact of nuclear masses on r-process nucleosynthesis: bulk properties versus shell effects