Y. Raitses, N. J. Fisch
A capacitive rf discharge was demonstrated in a dielectric capillary for generation of quasineutral plasma flow with energies of several tens of eV. This study aimed to investigate the potential of such a system for micropropulsion applications. The methodology involved generating plasma flow from a ceramic capillary with specified dimensions under varying gas flow rates and input power levels. Results indicated that a potential gradient at the capillary's open end, combined with high-temperature electrons within the discharge, facilitated ion acceleration. Key findings included the generation of an ion energy spectrum characterized by both high-energy accelerated ions and a low-energy tail formed from ionization processes occurring in the acceleration region. Moreover, the estimated total efficiency at a gas flow rate of 2 SCCM and 15 W input power reached 2%-3%. This approach appears promising due to its simplicity, low weight, compact dimensions of the source, and the absence of a cathode neutralizer.
@article{96bf72d1-6e88-48b7-80c3-cddbdfacca7b,
title={Plasma acceleration from radio frequency},
author={Y. Raitses and N. J. Fisch},
year={2026},
language={en}
}TY - JOUR TI - Plasma acceleration from radio frequency AU - Y. Raitses AU - N. J. Fisch PY - 2026 LA - en ER -
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