scholarly journals The Effects of Nude Faraday Probe Design and Vacuum Facility Backpressure on the Measured Ion Current Density Profile of Hall Thruster Plumes

2002 ◽  
Author(s):  
Mitchell Walker ◽  
Richard Hofer ◽  
Alec Gallimore
Keyword(s):  
Density Profile ◽  
Current Density ◽  
Ion Current ◽  
Hall Thruster ◽  
Probe Design ◽  
Current Density Profile ◽  
Ion Current Density

scholarly journals Magnetically filtered Faraday probe for measuring the ion current density profile of a Hall thruster

2006 ◽  
Vol 77 (1) ◽  
pp. 013503 ◽  
Author(s):  
Joshua L. Rovey ◽  
Mitchell L. R. Walker ◽  
Alec D. Gallimore ◽  
Peter Y. Peterson
Keyword(s):  
Density Profile ◽  
Current Density ◽  
Ion Current ◽  
Hall Thruster ◽  
Current Density Profile ◽  
Ion Current Density

Ion current density profile control of a scalable linear ion source and its application

2006 ◽  
Vol 77 (3) ◽  
pp. 03C107 ◽  
Author(s):  
F. Scholze ◽  
H. Neumann ◽  
M. Tartz ◽  
J. Dienelt ◽  
H. Schlemm
Keyword(s):  
Density Profile ◽  
Current Density ◽  
Ion Source ◽  
Ion Current ◽  
Profile Control ◽  
Current Density Profile ◽  
Ion Current Density

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.

scholarly journals Effect of Backpressure on Ion Current Density Measurements in Hall Thruster Plumes

2005 ◽  
Vol 21 (3) ◽  
pp. 408-415 ◽  
Author(s):  
Mitchell L. R. Walker ◽  
Allen L. Victor ◽  
Richard R. Hofer ◽  
Alec D. Gallimore
Keyword(s):  
Current Density ◽  
Ion Current ◽  
Hall Thruster ◽  
Density Measurements ◽  
Ion Current Density

Radiation-induced change of polyimide properties under high-fluence and high ion current density implantation

2004 ◽  
Vol 78 (7) ◽  
pp. 1067-1072 ◽  
Author(s):  
V.N. Popok ◽  
I.I. Azarko ◽  
R.I. Khaibullin ◽  
A.L. Stepanov ◽  
V. Hnatowicz ◽  
...  
Keyword(s):  
Current Density ◽  
Ion Current ◽  
High Fluence ◽  
Radiation Induced ◽  
Ion Current Density

Effect of Current Density Profile onq(a) Limit in Non-Circular Tokamak TNT-A

1985 ◽  
Vol 54 (5) ◽  
pp. 1823-1829
Author(s):  
Katsumi Ida ◽  
Isao Ochiai ◽  
Shunjiro Shinohara ◽  
Yoshio Nagayama ◽  
Hiroshi Toyama ◽  
...  
Keyword(s):  
Density Profile ◽  
Current Density ◽  
Current Density Profile
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