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The Buneman instability has many modifications (e.g., two symmetric opposite beams, beam-target instability, etc.) and several related classes of instabilities. First of them is the Farley-Buneman Instability, which develops if electron and ion velocities differ by more than ion acoustic speed. This instability is wellknown in the ionosphere region E [ Journal of Geophysical Research, vol. 101, no. 17, pp. 273–286, 1996 ]. Above some critical value of the current the Buneman instability changes into the Pierce instability which causes sudden nonoscillatory potential drop leading to the double layer formation and capture of ions in the potential well [ Physical Review Letters, vol. 43, no. 19, pp. 1404– 1407, 1979 ].