Electron cyclotron resonance microwave plasma neutralizer for ion thruster systems

Summary form only given. We report the application of the Getty, large area, ECR-plasma source, as an electron source for the neutralization of ion thruster beams. This plasma source consists of a large waveguide horn in which the microwave output end is covered with cross-polarized rows of permanen...

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Bibliographic Details
Main Authors: Hidaka, Y., Gilgenbach, R.M., Jones, M.C., Lau, Y.Y., Getty, W.D.
Format: Conference Proceeding
Language:English
Subjects:
Cyclotrons
Electron sources
Frequency
Ion beams
Magnetic field measurement
Plasma applications
Plasma measurements
Plasma sources
Plasma waves
Resonance
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Description
Summary:Summary form only given. We report the application of the Getty, large area, ECR-plasma source, as an electron source for the neutralization of ion thruster beams. This plasma source consists of a large waveguide horn in which the microwave output end is covered with cross-polarized rows of permanent magnets separated by slots. The large-area plasma is formed in the electron-cyclotron-resonant magnetic fields outside the magnet-bar slots. Typical microwave parameters are: frequency of 2.45 GHz, and power levels of hundreds of W. Electron densities have been measured to be overdense, at values up to 6 E11/cc at this frequency. Scaling studies are underway to raise the frequency to 6 GHz for a potential 6-fold increase in the electron density.
ISSN:0730-9244
2576-7208
DOI:10.1109/PLASMA.2004.1339869