SP-345 Evolution of the Solar System


FIGURE 21.8.1.- Homopolar apparatus.


FIGURE 21.8.1.- Homopolar apparatus. A voltage V is applied across an inner electrode (8) and an outer electrode (4) to give a radial electric field E. The electric field, in the presence of am axial magnetic field B, acts on the ionized portion of the gas to set it into rotation (7). The interaction between the rotating magnetized plasma and the nonionized, nonrotating gas (in contact with the wall) produces a voltage limitation indicating that the relative velocity of the two components attains a critical velocity vcrit. (From Angerth et al, 1962.)
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