Wave Propagation and Screening in a Dense Two-Component Plasma.

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view Abstract Citations References Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Wave Propagation and Screening in a Dense Two-Component Plasma. Goldstein, J. S. Abstract We consider the propagation of small- amplitude waves in a dense degenerate plasma (p~1O6-1O9 g/cc, T~108-1090K) such as may exist in the core of presupernova, or in very dense white dwarfs. The effect of ion motion is included. The results may be extended to zero frequency to obtain the screening length; the results of Cameron (AECL Chalk River, Do PD-312, 1959) on nuclear reaction rates at high density are confirmed. For nonzero frequencies, the dispersion relation is obtained for the medium. At low frequencies, the principal propagation mode is in the ion plasma, while at high enough frequencies, propagation in the electronic component dominates. The role of zero sound is considered, and may be expected to become important in the case of a neutron core, and in some cases in the presupernova core. The formation of shockwaves in these media is discussed. Research was sponsored by Air Force Cambridge Laboratories, Office of Aerospace Research. Publication: The Astronomical Journal Pub Date: 1963 DOI: 10.1086/109037 Bibcode: 1963AJ.....68Q.279G full text sources ADS |