NON-EQUILIBRIUM IONIZATION IN MAGNETOHYDRODYNAMIC CHANNEL FLOW WITH FINITE SEGMENTED ELECTRODES.
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GENERAL ELECTRIC CO PHILADELPHIA PA MISSILE AND SPACE DIV
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The characteristics of a magnetohydrodynamic channel flow when the plasma is in a non-equilibrium state and the Hall effect is present is studied. An essential feature of the analysis is the inclusion of segmented electrodes, since by this means one may minimize the axial currents due to the Hall effect. The non-equilibrium effect is accounted for by assuming that a functional relationship exists between the plasma electrical conductivity and the absolute magnitude of the local current density. In this paper only the zero th and first order solutions are presented. The solutions are carried out numerically due to the necessity of satisfying a non-classical boundary condition. For the cases carried out it has been possible to establish the fact that although there is no net axial current due to the Hall effect when the electrodes are finitely segmented and although there is no leakage between adjacent electrodes, inclusion of the non-equilibrium effect causes a reduction of the Hall axial electric field. Such reductions have been observed experimentally, and the present results suggest a qualitative explanation. Author
- Plasma Physics and Magnetohydrodynamics