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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 wasdoi:10.1063/1.1585114 fatcat:awtb6mrbara7vpbqa3xmjrhp3q