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Homework Help: Plasma Physics Debye Shielding

  1. Aug 25, 2011 #1
    1. The problem statement, all variables and given/known data

    Consider a positive point charge +q, immersed in plasma. Show that the net charge in the Debye shielding cloud exactly cancels the test charge. Assume the ions are fixed and that e*phi <<< kTe.

    2. Relevant equations

    f(u) = A exp [-(1/2*m*u^2 + q*phi)/k_b*T_e]
    u is the x component of velocity

    3. The attempt at a solution

    Really lost on this one. I think I could make a hand waivey argument with Gauss's Law but I don't see where to go on this one.
  2. jcsd
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