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The effect of ion flux neutralization on discharge in the channel of a Hall thruster was simulated using a hybrid model, in which the atom ensemble was described in two-dimensional (2-D) 0V (X, Y) approximation, ion ensemble in 2-D 2V (X, Y, Vx, Vy), and electron ensemble in 2-D (X, Y) Maxwell distribution function approximations. The influence of the secondary electron emission coefficient of the dielectric walls on the plasma flow was addressed. The effects of the low-energy ion losses to the ceramic walls and ion recombination on the walls are taken into account. The images of electrical field and xenon atom density distribution in the channel are presented.
Date of Publication: Apr 2005