Model analysis of a double-stage Hall effect thruster with double-peaked magnetic field and intermediate electrode

2007 ◽  
Vol 14 (11) ◽  
pp. 113502 ◽  
Author(s):  
J. Perez-Luna ◽  
G. J. M. Hagelaar ◽  
L. Garrigues ◽  
J. P. Boeuf
Keyword(s):  
Magnetic Field ◽  
Hall Effect ◽  
Model Analysis ◽  
Hall Effect Thruster ◽  
Intermediate Electrode

Influence of oblique magnetic field on electron cross-field transport in a Hall effect thruster

2015 ◽  
Vol 22 (4) ◽  
pp. 043511 ◽  
Author(s):  
Jan Miedzik ◽  
Serge Barral ◽  
Dariusz Daniłko
Keyword(s):  
Magnetic Field ◽  
Hall Effect ◽  
Hall Effect Thruster ◽  
Oblique Magnetic Field

Effect of magnetic field configuration on discharge characteristic of a Hall effect thruster with a variable channel

Vacuum ◽  
2019 ◽  
Vol 162 ◽  
pp. 78-84 ◽  
Author(s):  
Hong Li ◽  
Haotian Fan ◽  
Xingyu Liu ◽  
Minghao Ding ◽  
Yongjie Ding ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Hall Effect ◽  
Field Configuration ◽  
Magnetic Field Configuration ◽  
Discharge Characteristic ◽  
Hall Effect Thruster

Influence of hollow anode position on the performance of a hall-effect thruster with double-peak magnetic field

Vacuum ◽  
2017 ◽  
Vol 143 ◽  
pp. 251-261 ◽  
Author(s):  
Yongjie Ding ◽  
Hezhi Sun ◽  
Peng Li ◽  
Liqiu Wei ◽  
Yu Xu ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Hall Effect ◽  
Double Peak ◽  
Hall Effect Thruster ◽  
Hollow Anode

On matching the anode ring with the magnetic field in an ATON-type Hall effect thruster

2018 ◽  
Vol 123 (22) ◽  
pp. 223301
Author(s):  
Jinwen Liu ◽  
Hong Li ◽  
Xu Zhang ◽  
Yongjie Ding ◽  
Liqiu Wei ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Hall Effect ◽  
Hall Effect Thruster ◽  
The Magnetic Field

scholarly journals Low power thrust measurements of the water electrolysis Hall effect thruster

2021 ◽  
Author(s):  
Alexander Schwertheim ◽  
Aaron Knoll
Keyword(s):  
Magnetic Field ◽  
Hall Effect ◽  
Mass Flow Rate ◽  
Mass Flow ◽  
Flow Rate ◽  
Specific Impulse ◽  
Covalent Bond ◽  
Water Electrolysis ◽  
Hall Effect Thruster ◽  
Thrust Efficiency

AbstractWe propose that a Hall effect thruster could be modified to operate on the products of water electrolysis. Such a thruster would exploit the low cost and high storability of water while producing gaseous hydrogen and oxygen in-situ as they are required. By supplying the anode with oxygen and the cathode with hydrogen, the poisoning of the cathode is mitigated. The water electrolysis Hall effect thruster (WET-HET) has been designed to demonstrate this concept. The dimensions of the WET-HET have been optimized for oxygen operation using PlasmaSim, a zero-dimensional particle in cell code. We present the first direct thrust measurements of the WET-HET. A hanging pendulum style thrust balance is used to measure the thrust of the WET-HET while operating in the Boltzmann vacuum facility within the Imperial Plasma Propulsion Laboratory. For this test the beam was neutralized using a filament plasma bridge neutralizer operating on krypton. We find thrust, specific impulse, and thrust efficiency all increase linearly with power for values between 400 and 1050 W. Increasing the mass flow rate from 0.96 to 1.85 mg/s increases thrust at the expense of specific impulse. Changing mass flow rate was found to have little impact on the thrust efficiency over this range. An optimal radial magnetic flux density of 403 G at the exit plane is found. Further increases to the magnetic field beyond this point were found to decrease the thrust, specific impulse and thrust efficiency, whereas the discharge voltage increased monotonically with increasing magnetic field for a given input power. It was found that the experimental thruster performance was lower than the simulation results from PlasmaSim. However, the general trends in performance as a function of power and propellant mass flow rate were preserved. We attribute a portion of this discrepancy to the inability of the simulation to model the energy absorbed by the covalent bond of the oxygen molecule. For the powers and mass flow rates surveyed we measured thrust ranging from 4.52$$\pm 0.18\,$$ ± 0.18 to 8.45$$\pm 0.18\,$$ ± 0.18 mN, specific impulse between 324$$\pm 12\,$$ ± 12 and 593$$\pm 12\,$$ ± 12 s, and anode thrust efficiencies between 1.34$$\pm 0.10\,$$ ± 0.10 and 2.34$$\pm 0.10\,$$ ± 0.10 %.

scholarly journals The quantum Hall effect in the absence of disorder

2021 ◽  
Vol 6 (1) ◽  
Author(s):  
Kyung-Su Kim ◽  
Steven A. Kivelson
Keyword(s):  
Magnetic Field ◽  
Hall Effect ◽  
Quantum Hall Effect ◽  
Finite Interval ◽  
Quantum Hall ◽  
Wigner Crystal ◽  
Quasi Particle ◽  
Hall Conductance ◽  
Finite Extent

AbstractIt is widely held that disorder is essential to the existence of a finite interval of magnetic field in which the Hall conductance is quantized, i.e., for the existence of “plateaus” in the quantum Hall effect. Here, we show that the existence of a quasi-particle Wigner crystal (QPWC) results in the persistence of plateaus of finite extent even in the limit of vanishing disorder. Several experimentally detectable features that characterize the behavior in the zero disorder limit are also explored.

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