Figure 4
From: Demonstrating a new technology for space debris removal using a bi-directional plasma thruster
Simultaneously measured force to (a,b) the target and (c,d) the thruster as functions of the right- and left-hand solenoid currents (IBR and IBL). Either of these two solenoid currents is maintained at 8 A when surveying the other one. The momentum flux ejection to the left- and right-hand sides of the thruster can be controlled by the magnetic field configuration, yielding the space debris removal mode (zero thrust and the finite force to the target), the acceleration mode (leftward force to the thruster), and the deceleration mode (rightward force to the thruster).
