INTERNAL FORCES AND THE MAGNETOCONDUCTIVITY OF A NONDEGENERATE 2D ELECTRON FLUID

The forces on individual electrons in an unscreened nondegenerate elec tron fluid, due to electron density fluctuations, have been calculated using Monte Carlo simulations and determined experimentally over a br oad range of the plasma parameter Gamma. The experimental results are obtained from the magnetoconductivity sigma(B) measured for electrons on liquid helium below 1 K for B less than or equal to 8 T. The magnit ude and density dependence of sigma(B) are explained by the many-elect ron theory of magnetotransport. The internal electric fields found fro m the experiments are in excellent agreement with the simulations.