Consider the electrons in a plasma acted upon by a small, constant, and uniform external electric field
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Consider the electrons in a plasma acted upon by a small, constant, and uniform external electric field E. Under steady-state conditions with no spatial gradients, obtain an expression for the nonequilibrium distribution function f for the electrons, by applying a perturbation technique to the Boltzmann equation (take f = f0 + f1 with |f1|≪ f0 and neglect all second-order terms), using the relaxation model for the collision term
where ν is a relaxation collision frequency and f0 is the equilibrium Maxwellian distribution function. Assuming that ν is independent of velocity, obtain an expression for the electric conductivity σ0 of the plasma, by taking J = σ0E.
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