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Correlation Properties of Charges in Plasma Streams and the Possibility of Superconductivity

The fields from test bodies and individual charges in charged particle streams are studied by means of the equations of two-fluid hydrodynamics for charged liquids. In the presence of a current the charges of a plasma are not screened completely. In the case of a small drift velocity compared to the dispersion of the charge velocities the screening is not complete because of the forces of magnetic interaction which is a relativistic effect. In the opposite limit of a high drift velocity the interaction of charges at large distances has the character of the exchange of plasmons. The potential of pair interactions between individual charges in particle streams is calculated. This interaction is anisotropic in space; in the direction perpendicular to the velocity of relative motion it is attractive at large distances. If the electromagnetic self-contraction of the current channel together with the radiation cooling leads to the degeneration of electrons, the electron subsystem may pass to the superconducting state. The estimates using the temperature vertex function show that the transition temperature Tc may be of the order of some hundred degrees. At low electron density Tc is about 10-3 of the Fermi energy, and falls off exponentially at higher plasma densities.