Interaction of Collisionless Plasma Streams with Transverse Magnetic Fields
- 1 July 1964
- journal article
- research article
- Published by AIP Publishing in Physics of Fluids
- Vol. 7 (7), 977-981
- https://doi.org/10.1063/1.1711345
Abstract
A collisionless field‐free synthesized Cs+ plasma stream is impacted on the transverse magnetic field of a C‐electromagnet. The configuration of a ``narrow'' beam is maintained as stream widths (∼4 cm) are small compared to the ion cyclotron radius. The interaction is observed to be unstable when the plasma penetrates or traverses a magnetic field in excess of ∼5 G. The instability is manifested by the appearance of both high (10–100 Mcps) and low (100 kcps) oscillations. It is believed that the instability arises from contrastreaming electron currents generated by a peaked potential structure in the boundary gradient region.Keywords
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