Internal plasma potential profiles in a laboratory-model Hall thruster
نویسندگان
چکیده
منابع مشابه
Numerical investigation of a Hall thruster plasma
The dynamics of the Hall thruster is investigated numerically in the framework of a one-dimensional, multifluid macroscopic description of a partially ionized xenon plasma using finite element formulation. The model includes neutral dynamics, inelastic processes, and plasma–wall interaction. Owing to disparate temporal scales, ions and neutrals have been described by set of time-dependent equat...
متن کاملPotential Contours in Ion Focusing Hall Thruster
The Embedded Electrode Hall Effect Thruster is a modified 10 kW T-220HT with embedded graphite electrodes within the channel wall to study ion focusing for improved thrust-to-power ratio. Previous experiments with the thruster have demonstrated increased performance on xenon with biased electrodes caused by increases in ion energy, propellant efficiency, and a reduction in the plume divergence ...
متن کاملPlasma flow and plasma–wall transition in Hall thruster channel
In this paper a model of the quasineutral plasma and the transition between the plasma and the dielectric wall in a Hall thruster channel is developed. The plasma is considered using a two-dimensional hydrodynamic approximation while the sheath in front of the dielectric surface is considered to be one dimensional and collisionless. The dielectric wall effect is taken into account by introducin...
متن کاملPlasma Properties in the Plume of a Hall Thruster Cluster
The Hall thruster cluster is an attractive propulsion approach for spacecraft requiring very high-power electric propulsion systems. Plasma density, electron temperature, and plasma potential data collected with a combination of triple langmuir probes and floating emissive probes in the plume of a low-power, four-engine Hall thruster cluster are presented. Simple analytical formulas are introdu...
متن کاملPlasma instabilities in the ionization regime of a Hall thruster
We present recent experimental results of the use of electrostatic probes to characterize the differences seen in the low frequency instabilities (<200 kHz) in a laboratory Hall discharge operating in the ionization regime, i.e. at low voltages, where the ion current has not reached a maximum. Two very different wall materials are used in this study alumina and boron nitride. A wavelet decompos...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physics of Plasmas
سال: 2001
ISSN: 1070-664X,1089-7674
DOI: 10.1063/1.1338535