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Transport properties of liquid metal hydrogen under high pressuresA theory is developed for the compressibility and transport properties of liquid metallic hydrogen, near to its melting point and under high pressure. The interionic force law is assumed to be of the screened Coulomb type, because hydrogen has no core electrons. The random phase approximation is used to obtain the structure factor S(k) of the system in terms of the Fourier transform of this force law. The long wavelenth limit of the structure factor S(o) is related to the compressibility, which is much lower than that of alkali metals at their melting points. The diffusion constant at the melting point is obtained in terms of the Debye frequency, using a frequency spectrum analogous with the phonon spectrum of a solid. A similar argument is used to obtain the combined shear and bulk viscosities, but these depend also on S(o). The transport coefficients are found to be about the same size as those of alkali metals at their melting points.
Document ID
19740003541
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Brown, R. C.
(Sheffield Univ.)
March, N. H.
(Sheffield Univ.)
Date Acquired
August 7, 2013
Publication Date
January 1, 1972
Publication Information
Publication: Univ. Space Res. Assoc. High Pressure Phys. and Planetary Interiors
Subject Category
Materials, Metallic
Accession Number
74N11654
Distribution Limits
Public
Copyright
Other

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