Enhanced ionization in the cylindrical Hall thruster

A. Smirnov, Y. Raitses, N. J. Fisch
2003 Journal of Applied Physics  
Conventional annular Hall thrusters do not scale efficiently to low power. An alternative approach, a cylindrical Hall thruster with a cusp-type magnetic field distribution, has been investigated. A relatively large 9 cm diameter version of a cylindrical thruster, operated in 300-1000 W power range, and the 2.6 cm miniaturized cylindrical Hall thruster, operated in the power range 50-300 W, exhibited performances comparable with conventional annular Hall thrusters of the similar sizes. It was
more » ... und that the cylindrical thrusters have unusually high propellant utilization, compared to conventional Hall thrusters. Results of numerical simulations, performed within the framework of a quasi-1D stationary thruster model, show that the increase in the propellant utilization does not appear to be quantitatively explained by a reduction of plasma wall losses. This indicates that more accurate description of the experimentally observed effect requires kinetic treatment of electrons. I.
doi:10.1063/1.1585114 fatcat:awtb6mrbara7vpbqa3xmjrhp3q