Strongly driven frequency-sweeping events in plasmas

R. G.L. Vann, H. L. Berk, A. R. Soto-Chavez

Research output: Contribution to journalArticlepeer-review

22 Scopus citations


A generic model of a kinetic plasma formed from a source and sink is presented which without instability would form a strongly unstable state due to a single mode. Instead, the resulting wave-particle resonant interaction maintains the distribution near a marginally stable state through the continual production of fast frequency-sweeping modes that sweep unidirectionally (upward in our case) throughout the energy-inverted region of the distribution function. The energy of these modes can be channeled to the background plasma through wave dissipation and, in our particular example, one quarter of the injected energy is available to be channeled.

Original languageEnglish (US)
Article number025003
JournalPhysical Review Letters
Issue number2
StatePublished - Jul 13 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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