Proof-of-concept demonstration of the PEGASES plasma thruster
| Autor: | Lafleur, Trevor, Rafalskyi, D.V., Chabert, Pascal, Aanesland, Ane |
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| Přispěvatelé: | Laboratoire de Physique des Plasmas (LPP), Université Paris-Sud - Paris 11 (UP11)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Sorbonne Université (SU)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-École polytechnique (X)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: | |
| Zdroj: | International Electric Propulsion Conference International Electric Propulsion Conference, 2015, pp.IEPC-2015-114/ISTS-2015-b-114 |
| Popis: | International audience; Here we experimentally demonstrate the working principle of a gridded plasma thrusterthat alternatively extracts and accelerates both positive and negative ions to generate thrust. The plasma is created in an inductively coupled plasma source, and negativeion formation is enhanced by cooling electrons using a magnetic filter, which creates an almost electron-free plasma region near the source exit. By then applying square voltage waveforms with frequencies between 20-950kHz, positive and negative ions are extractedand accelerated to high energies (100?s of eV). Downstream measurements show that at sufficiently large frequencies the ion beams can be well neutralized. The behaviour of the measured ion current with frequency is explained with an analytical model which extends the Child-Langmuir law to AC ion acceleration. |
| Databáze: | OpenAIRE |
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