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Plasma Physics Debye Shielding

  • #1

Homework Statement



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.

Homework Equations



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

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.
 

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