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Penetration of magnetic field into a plasma?

  1. Jan 16, 2016 #1
    A magnetic field doesn't penetrate well into a plasma because it produces currents that counters the field, so to speak. But, before those currents are produced, does the whole of the plasma "feel" the magnetic field? For how long; ns, us or ms?

  2. jcsd
  3. Jan 17, 2016 #2


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    they would depend on how big an area (volume) the plasma is to which you have given no info
  4. Jan 17, 2016 #3


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    Does not the plasma behave just like a piece of metal, where the behaviour of fields is well understood?
  5. Jan 17, 2016 #4
    Let's say we have a plasma in a Fusor, that is about the size of a golf ball, and apply a strong magnetic field; how long does it take for the currents to get running to shield the inner parts of the plasma from the field?
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