The evolution of two-dimensional(2D) electron phase-space holes(electron holes) has been previously investigated with electrostatic Particle-in-Cell(PIC) simulations,which neglect ion dynamics.The electron holes are found to be unstable to the transverse instability,and their evolution is determined by the combined action between the transverse instability and the stabilization by the background magnetic field.In this paper,the effect of ion dynamics on the evolution of an electron hole is studied.In weakly magnetized plasma(Ωeωpe),the electron hole is broken due to the lower hybrid waves, and its evolution is much faster.
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