Nuclear reactions in hot stellar matter and nuclear surface deformation
arXiv:astro-ph/0611382 · doi:10.1103/PhysRevC.74.055804
Abstract
Cross-sections for capture reactions of charged particles in hot stellar matter turn out be increased by the quadrupole surface oscillations, if the corresponding phonon energies are of the order of the star temperature. The increase is studied in a model that combines barrier distribution induced by surface oscillations and tunneling. The capture of charged particles by nuclei with well-deformed ground-state is enhanced in stellar matter. It is found that the influence of quadrupole surface deformation on the nuclear reactions in stars grows, when mass and proton numbers in colliding nuclei increase.
12 pages, 10 figures
References in corpus (9)
- Nuclear Ground-State Masses and Deformations
- Astrophysical Reaction Rates From Statistical Model Calculations
- Quantum Tunneling in Nuclear Fusion
- Tables of Nuclear Cross Sections and Reaction Rates: an Addendum to the Paper "Astrophysical Reaction Rates from Statistical Model Calculations"
- Alpha-nucleus potential for alpha-decay and sub-barrier fusion
- The Origin of the Heavy Elements: Recent Progress in the Understanding of the r-Process
- Element Synthesis in Stars
- Capture of alpha Particles by Isospin-Symmetric Nuclei
- Multifragmentation reactions and properties of hot stellar matter at subnuclear densities