Question

Study of plasma sheath in the presence of gradient magnetic field

Answer 1

The structure of the plasma sheath in an oblique magnetic field was investigated with the fluid method. In different magnitude and directions of the magnetic field, the electron and ion density distribution, ion flow velocity, electron potential and Bohm's criterion have been calculated. It is shown that the magnetic field has obvious effect on the plasma sheath. Under the action of electrostatic and Lorentz forces, the ion flow makes a helical movement, and the ion density distribution fluctuates.


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