scholarly journals Optimization of a Faraday Cup Collimator for Electric Propulsion Device Beam Study: Case of a Hall Thruster

2021 ◽  
Vol 11 (5) ◽  
pp. 2419
Author(s):  
Hugonnaud Valentin ◽  
Mazouffre Stéphane
Keyword(s):  
Low Power ◽  
Optimum Design ◽  
Electric Propulsion ◽  
Surrounding Medium ◽  
Plasma Sheath ◽  
Ion Current ◽  
Hall Thruster ◽  
Faraday Cup ◽  
Minimum Dimension ◽  
Study Case

A Faraday cup (FC) is an instrument dedicated to current measurement in beams, jets and plasmas. It consists of a set of polarized electrodes mounted in such a way plasma sheath effect can be neglected, yielding accurate and reliable results. A FC is composed of three main parts, namely a collector or cup, which collects the current, a collimator, which defines the collection area and can contribute to limit electrons from entering the cup and a housing which protects the instrument from perturbation caused by the surrounding medium. In this paper, we provide experimental results of the effect of the collimator upon the measured ion current within the beam of a low-power Hall thruster. Different collimator materials, aperture diameters and polarization voltages are studied to determine the optimum design. Minimum dimension as well as appropriate materials are given as a conclusion in the case of low-power Hall thruster beam investigation.

A performance study of a low power Hall thruster

1997 ◽  
Author(s):  
W. Hargus, Jr. ◽  
R. Cedolin ◽  
N. Meezan ◽  
M. Cappelli ◽  
W. Hargus, Jr. ◽  
...  
Keyword(s):  
Low Power ◽  
Hall Thruster ◽  
Performance Study ◽  
A Performance

Extended channel Hall thruster for air-breathing electric propulsion

2021 ◽  
Vol 130 (5) ◽  
pp. 053306
Author(s):  
Francesco Marchioni ◽  
Mark A. Cappelli
Keyword(s):  
Electric Propulsion ◽  
Hall Thruster ◽  
Air Breathing

scholarly journals Research on anode power supply of low-power Hall thruster

2021 ◽  
Vol 1754 (1) ◽  
pp. 012167
Author(s):  
JIA Hangyu ◽  
QU Chengzhi ◽  
JI Yuhui ◽  
ZHOU Guangrui ◽  
WU Suliang
Keyword(s):  
Low Power ◽  
Power Supply ◽  
Hall Thruster

scholarly journals Coupling plasma plume of a low-power magnetically shielded Hall thruster with a hollow cathode

2020 ◽  
Author(s):  
Guangchuan ZHANG ◽  
Junxue REN ◽  
Wei LIANG ◽  
Ning OUYANG ◽  
Chao LU ◽  
...  
Keyword(s):  
Low Power ◽  
Hollow Cathode ◽  
Plasma Plume ◽  
Hall Thruster

Performance characteristics according to the radial position of gas distributor holes in a low-power cylindrical Hall thruster

2016 ◽  
Vol 23 (8) ◽  
pp. 083514 ◽  
Author(s):  
Yuanyuan Gao ◽  
Hui Liu ◽  
Peng Hu ◽  
Hongyan Huang ◽  
Daren Yu
Keyword(s):  
Low Power ◽  
Performance Characteristics ◽  
Hall Thruster ◽  
Radial Position ◽  
Gas Distributor

scholarly journals Far-Field Plume Characterization of a 100-W Class Hall Thruster

Aerospace ◽  
2020 ◽  
Vol 7 (5) ◽  
pp. 58
Author(s):  
Thibault Hallouin ◽  
Stéphane Mazouffre
Keyword(s):  
Energy Distribution ◽  
Current Density ◽  
Low Voltage ◽  
Ion Current ◽  
Hall Thruster ◽  
Far Field ◽  
Ion Energy ◽  
Ion Energy Distribution ◽  
The Core ◽  
Ion Current Density

The 100 W-class ISCT100-v2 Hall Thruster (HT) has been characterized in terms of far-field plume properties. By means of a Faraday Cup and a Retarding Potential Analyzer, both the ion current density and the ion energy distribution function have been measured over a 180 ∘ circular arc for different operating points. Measurements are compared to far-field plume characterizations performed with higher power Hall thrusters. The ion current density profiles remain unchanged whatever the HT input power, although an asymptotic limit is observed in the core of the plume at high discharge voltages and anode mass flow rates. In like manner, the ion energy distribution functions reveal that most of the beam energy is concentrated in the core of the plume [ − 40 ∘ ; 40 ∘ ] . Moreover, the fraction of low energy ion populations increases at large angles, owing to charge exchange and elastic collisions. Distinct plume regions are identified; they remain similar to the one described for high-power HTs. An efficiency analysis is also performed in terms of current utilization, mass utilization, and voltage utilization. The anode efficiency appears to be essentially affected by a low voltage utilization, the latter originating from the large surface-to-volume ratio inherent to low-power HTs. Experimental results also show that the background pressure clearly affects the plume structure and content.

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