Cathode effects in cylindrical Hall thrusters
نویسندگان
چکیده
منابع مشابه
Multiscale Modeling of Hall Thrusters
Multiscale Modeling of Hall Thrusters Hall thrusters are efficient space propulsion devices that produce thrust by accelerating quasineutral plasma. The thruster consists of a channel with one end open to the ambient environment. The neutral propellant is injected at the closed end and is ionized by electrons produced by an externally mounted cathode. A radial magnetic field is applied across t...
متن کاملTransport Physics in Hall Plasma Thrusters
An analysis of measurements supporting the presence of anomalous cross-field electron mobility in Hall plasma accelerators is presented. Non-intrusive laser-induced fluorescence measurements of neutral and ionized xenon velocities, and various electrostatic probe diagnostic measurements are used to locally determine the effective electron Hall parameter inside the accelerator channel. These val...
متن کاملAnomalous electron mobility modeling in Hall thrusters
Accurate modeling of the anomalous electron mobility is crucial for successful simulation of Hall thrusters. Existing computational models for the anomalous electron mobility are used to simulate the UM/AFRL P5 Hall thruster in a 2D axisymmetric hybrid PIC-MCC code. Comparison to experimental results indicates that while these computational models can be tuned to reproduce the correct thrust or...
متن کامل2 D simulations of Hall thrusters
Closed-Drift (Hall) thrusters constitute an important electric propulsion technology for certain applications requiring low thrust levels, e.g. satellite station keeping and orbit transfer (Gulczinski and Spores, 1996). The thrust in Hall thrusters is generated by ions being accelerated through an annular plasma by the electric field set up between an anode and a cathode. This electric field is...
متن کاملEffects of Cathode Configuration on Hall Thruster Cluster Plume Properties
Clusters of Hall thrusters may be used to produce electric propulsion systems capable of operating at power levels in excess of the current state of the art. One of the key factors to be considered in determining the optimum cluster architecture is the configuration of the electron-emitting cathode(s). This work presents experimentally determined plume properties and discharge current character...
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: Journal of Applied Physics
سال: 2008
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.2999343