Neutron Capture Rates near A=130 which Effect a Global Change to the r-Process Abundance Distribution

Abstract

We investigate the impact of neutron capture rates near the A=130 peak on the $r$-process abundance pattern. We show that these capture rates can alter the abundances of individual nuclear species, not only in the region of A=130 peak, but also throughout the abundance pattern. We discuss the nonequilibrium processes that produce these abundance changes and determine which capture rates have the most significant impact.

8 pages, 4 figures, submitted to Phys. Rev

References in corpus (6)

• The r-process of stellar nucleosynthesis: Astrophysics and nuclear physics achievements and mysteries
• r-Process Nucleosynthesis in Hot Accretion Disk Flows from Black Hole - Neutron Star Mergers
• r-Process Nucleosynthesis in Shocked Surface Layers of O-Ne-Mg Cores
• Fission Cycling in a Supernova r-process
• Neutron capture on 130Sn during r-process freeze-out
• Neutron Capture in the r-Process -- Do We Know Them And Does It Make Any Difference?

Cited by in corpus (28)

• The impact of individual nuclear properties on $r$-process nucleosynthesis
• Neutrino-driven wind simulations and nucleosynthesis of heavy elements
• Neutron Reactions in Astrophysics
• Dynamical r-process studies within the neutrino-driven wind scenario and its sensitivity to the nuclear physics input
• The influence of collective neutrino oscillations on a supernova r-process
• The impact of individual nuclear masses on $r$-process abundances
• Formation Of The Rare Earth Peak: Gaining Insight Into Late-Time r-Process Dynamics
• Novel Techniques for Constraining Neutron-Capture Rates Relevant for r-Process Heavy-Element Nucleosynthesis
• Influence of nuclear physics inputs and astrophysical conditions on Th/U chronometer
• The Influence Of Neutron Capture Rates On The Rare Earth Region Of The r-Process Abundance Pattern
• Low-energy limit of the radiative dipole strength in nuclei
• Nuclear Dynamics and Reactions in the Ab Initio Symmetry-Adapted Framework
• Cross sections for neutron capture from surrogate measurements: An examination of Weisskopf-Ewing and ratio approximations
• Relativistic two-phonon model for low-energy nuclear response
• Sensitivity of the r-process to nuclear masses
• Reexamining the temperature and neutron density conditions for r-process nucleosynthesis with augmented nuclear mass models
• Microscopic optical potential for exotic isotopes from chiral effective field theory
• First application of mass measurement with the Rare-RI Ring reveals the solar r-process abundance trend at A=122 and A=123
• Continuum quasiparticle random phase approximation for astrophysical direct neutron capture reaction of neutron-rich nuclei
• Sensitivity studies for r-process nucleosynthesis in three astrophysical scenarios
• $\beta$ and $\beta$-delayed neutron decay of the $N=82$ nucleus ${}_{49}^{131}$In${}_{82}$
• Direct capture in the ${}^{130}$Sn(n,$\gamma$)${}^{131}$Sn and ${}^{132}$Sn(n,$\gamma$)${}^{133}$Sn reactions under $r$-process conditions
• Impact of level densities and $\gamma$-strength functions on $r$-process simulations
• The thermalization of $\gamma$-rays in radioactive expanding ejecta: A simple model and its application for Kilonovae and Ia SNe
• Neutron transfer reactions on the ground state and isomeric state of a 130Sn beam
• Low-Energy Magnetic Radiation
• Spectroscopic studies of neutron-rich ${}^{129}$In and its $\beta$-decay daughter, ${}^{129}$Sn, using the GRIFFIN spectrometer
• The R-Process Alliance: A Nearly Complete R-Process Abundance Template Derived from Ultraviolet Spectroscopy of the R-Process-Enhanced Metal-Poor Star HD 222925