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Homework Help: Plasma physics

  1. Oct 11, 2008 #1
    1. The problem statement, all variables and given/known data
    A cylindrically symmetric plasma column in a uniform B field (= B0 in z direction) has
    n(r) = n0 exp[-(r/r0)^2] and ni = ne = n0exp[e phi/kb Te] where phi is the potential and Te is the temp of the electrons.

    (a) Show that Ve and VDe are equal and opposite

    2. Relevant equations
    We were told not to use poissons equation unless it is unavoidable (not sure if this is) but i get an answer that works using that, however i am looking for an alternate method.

    3. The attempt at a solution
    See attached pdf, shows my work for Ve, VDe worked out fine where VDe = -2kb T r/((r0)^2 e B) in the theta direction.


    Attached Files:

    • Ve.pdf
      File size:
      91.4 KB
  2. jcsd
  3. Oct 11, 2008 #2
    nobody? =(
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