Neutrino-Induced Fission and r-Process Nucleosynthesis
arXiv:astro-ph/0203194 · doi:10.1086/340643
Abstract
An r-process scenario with fission but no fission cycling is considered to account for the observed abundance patterns of neutron-capture elements in ultra-metal-poor stars. It is proposed that neutrino reactions play a crucial role in inducing the fission of the progenitor nuclei after the r-process freezes out in Type II Supernovae. To facilitate neutrino-induced fission, the proposed r-process scenario is restricted to occur in a low-density environment such as the neutrino-driven wind from the neutron star. Further studies to develop this scenario are emphasized.
11 pages, 2 figures, to appear in ApJL
References in corpus (3)
Cited by in corpus (18)
- Nuclear weak-interaction processes in stars
- VLT/UVES Abundances in Four Nearby Dwarf Spheroidal Galaxies: I. Nucleosynthesis and Abundance Ratios
- Detailed Abundances for 28 Metal-poor Stars: Stellar Relics in the Milky Way
- Short-lived Nuclei in the Early Solar System: Possible AGB Sources
- Charged-Particle and Neutron-Capture Processes in the High-Entropy Wind of Core-Collapse Supernovae
- Current Status of r-Process Nucleosynthesis
- The Origin of the Heavy Elements: Recent Progress in the Understanding of the r-Process
- Calculations of fission rates for r-process nucleosynthesis
- Supernova Neutrino-Nucleus Astrophysics
- Stellar Sources for Heavy r-Process Nuclei
- Neutrino-nucleus reactions and their role for supernova dynamics and nucleosynthesis
- -delayed fission in -process nucleosynthesis
- The Influence of Neutrinos on r-Process Nucleosynthesis in the Ejecta of Black Hole-Neutron Star Mergers
- Fission Cycling in a Supernova r-process
- r-Process Abundance Universality and Actinide Cosmochronology
- Neutrino-induced fission of neutron-rich nuclei
- Nuclear physics and astrophysics of the r-process
- The r-Process: Recent Progress and Needs for Nuclear Data