Collective Microwave Emission from Intense Elecron-Beam Interactions: Theory and Experiment
- 6 October 1980
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 45 (14), 1182-1185
- https://doi.org/10.1103/PhysRevLett.45.1182
Abstract
High-power microwaves are observed in two clear frequency bands when an intense relativistic electron beam passes through an unmagnetized plasma. The high-frequency band has frequency which scales with and resembles radiation from processes in type-III solar bursts. Theory indicates beam-plasma stabilization may arise from radiative losses. The lower-frequency band, with frequency independent of , may represent conversion of electrostatic waves near the plasma boundary in inhomogeneities of size ∼0.3 cm. Experiments in a magnetic field qualitatively agree with our models.
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