Neutrino Scattering in Heterogeneous Supernova Plasmas
arXiv:astro-ph/0607564 · doi:10.1103/PhysRevC.74.065801
Abstract
Neutrinos in core collapse supernovae are likely trapped by neutrino-nucleus elastic scattering. Using molecular dynamics simulations, we calculate neutrino mean free paths and ion-ion correlation functions for heterogeneous plasmas. Mean free paths are systematically shorter in plasmas containing a mixture of ions compared to a plasma composed of a single ion species. This is because neutrinos can scatter from concentration fluctuations. The dynamical response function of a heterogeneous plasma is found to have an extra peak at low energies describing the diffusion of concentration fluctuations. Our exact molecular dynamics results for the static structure factor reduce to the Debye Huckel approximation, but only in the limit of very low momentum transfers.
11 pages, 13 figures
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Cited by in corpus (7)
- Physics of Neutron Star Crusts
- Statistical Model for a Complete Supernova Equation of State
- A Second Relativistic Mean Field and Virial Equation of State for Astrophysical Simulations
- Statistical description of complex nuclear phases in supernovae and proto-neutron stars
- The Shear Viscosity and Thermal Conductivity of Nuclear Pasta
- Thermal conductivity and impurity scattering in the accreting neutron star crust
- Spectra and rates of bremsstrahlung neutrino emission in stars