Two-dimensional magnetohydrodynamic calculations of the plasma focus

Two-dimensional magnetohydrodynamic calculations on plasma focus experiments in the Mather geometry are described. The properties of the two-dimensional numerical solutions are discussed. Detailed results are given for a specific problem which compares favorably with experiment. The numerical solution for the plasma focus previously given by Potter has been rerun with substantial disagreement. Arguments are given to show that the Potter code is incorrect.