Volume 116, Number 5, December 2016
|Number of page(s)||7|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||20 January 2017|
Observation of quasi-periodic frequency sweeping in electron cyclotron emission of nonequilibrium mirror-confined plasma
Institute of Applied Physics of Russian Academy of Sciences - 46 Ulyanov Str., 603950, Nizhny Novgorod, Russia
Received: 6 October 2016
Accepted: 2 January 2017
Chirping frequency patterns have been observed in the electron cyclotron emission from strongly nonequilibrium plasma confined in a table-top mirror magnetic trap. Such patterns are typical for the formation of nonlinear phase-space structures in a proximity of the wave-particle resonances of a kinetically unstable plasma, also known as the “holes and clumps” mechanism. Our data provides the first experimental evidence for the acting of this mechanism in the electron cyclotron frequency domain.
PACS: 52.35.-g – Waves, oscillations, and instabilities in plasmas and intense beams / 52.72.+v – Laboratory studies of space- and astrophysical-plasma processes
© EPLA, 2016
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