Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.190..271l&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 190, no. 2, April 1992, p. 271-280.
Astronomy and Astrophysics
Astrophysics
3
Dense Plasmas, Elastic Scattering, Gravitational Collapse, Neutrinos, Stellar Evolution, Coulomb Collisions, Momentum Transfer, Stellar Structure
Scientific paper
The interaction of neutrinos with nuclei in the superdense matter of a collapsing star is studied, taking into account the collective modes and thermal fluctuations of the medium density. It is shown that the elastic neutrino scattering by nuclei with a momentum transfer less than or of the order of the inverse distance between the ions in the nonideal Coulomb plasma, differs considerably from the analogous scattering by a single nucleus. The weak nu-A interaction screening by medium electrons is taken into account. The collision integral and transport cross section of neutrino scattering by nuclei are calculated in terms of macroscopic medium parameters.
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