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Title: Neutrino scattering in heterogeneous supernova plasmas

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-Hueckel approximation, but only in the limit of very low momentum transfers.

Authors:
; ;  [1];  [2]
  1. Department of Physics and Nuclear Theory Center, Indiana University, Bloomington, Indiana 47405 (United States)
  2. (United States)
Publication Date:
OSTI Identifier:
20864243
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 74; Journal Issue: 6; Other Information: DOI: 10.1103/PhysRevC.74.065801; (c) 2006 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; APPROXIMATIONS; COMPUTERIZED SIMULATION; CORRELATION FUNCTIONS; DIFFUSION; ELASTIC SCATTERING; FLUCTUATIONS; IONS; MEAN FREE PATH; MIXTURES; MOLECULAR DYNAMICS METHOD; MOMENTUM TRANSFER; NEUTRINOS; NUCLEI; PLASMA; RESPONSE FUNCTIONS; STRUCTURE FACTORS; SUPERNOVAE; TRAPPING

Citation Formats

Caballero, O. L., Horowitz, C. J., Berry, D. K., and University Information Technology Services, Indiana University, Bloomington, Indiana 47408. Neutrino scattering in heterogeneous supernova plasmas. United States: N. p., 2006. Web. doi:10.1103/PHYSREVC.74.065801.
Caballero, O. L., Horowitz, C. J., Berry, D. K., & University Information Technology Services, Indiana University, Bloomington, Indiana 47408. Neutrino scattering in heterogeneous supernova plasmas. United States. doi:10.1103/PHYSREVC.74.065801.
Caballero, O. L., Horowitz, C. J., Berry, D. K., and University Information Technology Services, Indiana University, Bloomington, Indiana 47408. Fri . "Neutrino scattering in heterogeneous supernova plasmas". United States. doi:10.1103/PHYSREVC.74.065801.
@article{osti_20864243,
title = {Neutrino scattering in heterogeneous supernova plasmas},
author = {Caballero, O. L. and Horowitz, C. J. and Berry, D. K. and University Information Technology Services, Indiana University, Bloomington, Indiana 47408},
abstractNote = {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-Hueckel approximation, but only in the limit of very low momentum transfers.},
doi = {10.1103/PHYSREVC.74.065801},
journal = {Physical Review. C, Nuclear Physics},
number = 6,
volume = 74,
place = {United States},
year = {Fri Dec 15 00:00:00 EST 2006},
month = {Fri Dec 15 00:00:00 EST 2006}
}