Characterization of the Plasma Plume from a LaB6 Cathode: A Comparison of Probe Techniques

Washeleski, Robert L.; King, Lyon B.

doi:10.2514/6.2009-5199

Cited by 6 publications

(5 citation statements)

References 2 publications

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“…The cathode used in this work is a laboratory model 5 A-class cathode with a flat disk shape LaB 6 insert heated by a tungsten filament. Although flat emitters are less common than cylindrical ones, such a geometry has been used by various groups in the past, mostly for fundamental works 4,[10][11][12][13][14] . Only a brief description of the cathode is given here.…”

Section: B Cathode and Anodesmentioning

confidence: 99%

Anode geometry influence on LaB6 cathode discharge characteristics

et al. 2019

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The characterization of an electric propulsion device cathode is performed in the so-called diode configuration with an external anode. The anode acts as a physical boundary for the cathode plasma discharge; therefore, it influences cathode operation and performances. In this study, four different anodes—namely, a disk, a plate, a long cylinder, and a short cylinder—have been used with a flat disk LaB6 emitter 5 A-class cathode to examine the anode geometry impact on cathode discharge properties. Current–voltage curves, discharge oscillations, electron parameters, and ion velocities have been measured for currents in the 2 A to 12 A range and xenon mass flow rates varied from 0.4 mg/s to 1 mg/s with a fixed cathode-to-anode distance. The set of results clearly supports the fact that the anode geometry strongly influences the cathode characteristics both at the macroscopic and the microscopic scale.

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Section: B Cathode and Anodesmentioning

confidence: 99%

Anode geometry influence on LaB6 cathode discharge characteristics

et al. 2019

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“…The cathode is based on a flat disk LaB 6 insert, emitting electrons via thermionic emission after being sufficiently heated by a tungsten wire heater. Few studies are available on discharge characterization of cathodes with disk-shaped emitters [10,11], although this design is used by several research teams [12,13,14,15]. Moreover, the influence of anode position on cathode discharge mode is poorly documented in the literature [16,17,18].…”

Section: Introductionmentioning

confidence: 99%

Anode position influence on discharge modes of a LaB6 cathode in diode configuration

Potrivitu

Joussot

Mazouffre

2018

Vacuum

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“…To be consistent with past work with the T-40 HET, a 10 A Moscow Aviation Institute (MAI)-derived lanthanum hexaboride (LaB 6 ) cathode was used for this work [34,37]. The MAI cathode was located at the 12 o'clock position of the thruster.…”

Section: B T-40 Hetmentioning

confidence: 99%