Influence of Ion-Resonance Broadening on the Anomalous Heating and Momentum Transfer in a Current-Carrying Plasma

The anomalous heating and momentum transfer in a current-carrying plasma are calculated including the effects of ion resonance broadening on the nonlinear development of the ion acoustic instability. In the constant-current regime, the anomalous resistivity is found to be of order ${\left(\frac{T_i}{T_e}\right)}^{\frac{3}{2}}{{\omega }_{\mathrm{pe}}}^{-1\mathrm{}}$, which compares favorably with the measured resistivity in several experiments.