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Plasma capacitor?

  1. Jul 7, 2008 #1


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    Does the concept of capacitance also apply to positively-charged plasma particles in a strong enough electric field? In other words, is it possible to accumulate positive gas ions on one side of some apparatus (or one side of a vacuum tube filled with a very small amount of gas) if a strong enough voltage were applied to attract the positive ions one direction and its electrons in the other direction? Or do the plasma particles stay uniformly distributed within the vessel like any non-plasma gas would regardless of the voltage used?

  2. jcsd
  3. Jul 8, 2008 #2
    Plasma conducts rather well, so if an electric field was placed across a plasma, would normally
    be conducted away though the electrodes. But perhaps using magnets to trap the electric
    charges at either end, might make for a stable plasma capacitor. Its not obvious to me that
    such a configuration exists, but it might be possible to make one.
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