منابع مشابه
Ion ejection from a permanent-magnet mini-helicon thruster
A small helicon source, 5 cm in diameter and 5 cm long, using a permanent magnet (PM) to create the DC magnetic field B, is investigated for its possible use as an ion spacecraft thruster. Such ambipolar thrusters do not require a separate electron source for neutralization. The discharge is placed in the far-field of the annular PM, where B is fairly uniform. The plasma is ejected into a large...
متن کاملDev Development and Test of a Permanent Magnet Helicon Thruster
Title of Document: DEV DEVELOPMENT AND TEST OF A PERMANENT MAGNET HELICON THRUSTER Michael Frank DeMaio, Jr. M.S. 2010 Directed By: Assistant Professor Raymond Sedwick, Department of Aerospace Engineering This thesis describes the development of a test facility equipped with Langmuir probe and Retarding Potential Analyzer diagnostics for helicon thruster research. A helicon thruster using perma...
متن کاملPermanent-magnet helicon sources and arrays: a new type of rf plasma
Helicon discharges are known for their ability to produce high densities of partially ionized plasma, their efficiency arising from an unusual mechanism of RF coupling. However, the requirement of a dc magnetic field has prevented their wide acceptance in industry. The use of permanent magnets greatly simplifies helicon sources, and arrays of small sources extends the use of helicons to the pro...
متن کاملPerformance of a permanent-magnet helicon source at 27 and 13 MHz
A small helicon source is used to create dense plasma and inject it into a large chamber. A permanent magnet is used for the dc magnetic field (B-field), making the system very simple and compact. Though theory predicts that better antenna coupling will occur at 27.12 MHz, it was found that 13.56 MHz surprisingly gives even higher density due to practical effects not included in theory. Complet...
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ژورنال
عنوان ژورنال: IEEE Transactions on Plasma Science
سال: 2011
ISSN: 0093-3813,1939-9375
DOI: 10.1109/tps.2011.2160345