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An interesting phenomenon is observed in a 1 kW Hall plasma accelerator operating with the electromagnetic coils in series with the discharge circuit. The discharge current jumps to-and-fro between two different values. This phenomenon is named bistable characteristic of discharge current of a Hall plasma accelerator in this paper. As a whole, the discharge current has no obvious regular period, the...
Discriminated from the ionization in the discharge channel of the ATON-type hall thruster, the ionization in the buffer chamber, called ldquopre-ionizationrdquo, has an impact on the discharge current characteristics. To improve the pre-ionization ratio by optimizing magnetic field in the buffer chamber, the main characteristics of the magnetic field are proposed in this article; and then a new magnetic...
This paper investigates the magnetic field intensity effects on the discharge characterization of Hall thrusters for optimization of the magnetic fields. Vary the strength of magnetic fields with its topography holds constant (keep in ldquofocusingrdquo type), and make an experimental study of the thrusterpsilas operating performance working in different regions of magneto-ampere curve through Langmuir...
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