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Current-Free Electric Double Layer in a Small Collisional Plasma Thruster Nozzle Simulation

Ho, Teck Seng; Charles, Christine; Boswell, Roderick


A computational fluid dynamics and plasma model of a collisional (~ a few Torr) radiofrequency (at 13.56 MHz) argon plasma capacitively coupled in a converging-diverging nozzle (applied to the optimization of electrothermal plasma thrusters for space use) shows the formation of a strong stationary current-free double layer (CFDL) at the 1.5 mm diameter nozzle throat for a downstream pressure of ~ 0.1 Torr. The cycle average magnitude of the double layer potential is ΔΦDL = 77 V and the electron...[Show more]

CollectionsANU Research Publications
Date published: 2019-11-27
Type: Journal article
Source: Frontiers in Physics
DOI: 10.3389/fphy.2019.00200
Access Rights: Open Access


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