Volume 124, Number 3, November 2018
|Number of page(s)||7|
|Section||Physics of Gases, Plasmas and Electric Discharges|
|Published online||04 December 2018|
Control of electron-cyclotron instability driven by strong ECRH in open magnetic trap
1 Institute of Applied Physics, RAS - 46 Ulyanova st., Nizhny Novgorod 603950, Russia
2 Lobachevsky State University of Nizhny Novgorod - 23 Gagarina ave., Nizhny Novgorod 603950, Russia
3 Department of Physics, University of Jyvaskyla - PO Box 35 (YFL), Jyvaskyla 40500, Finland
Received: 21 September 2018
Accepted: 29 October 2018
We discuss the laboratory experiment on a controlled transition from the generation of periodic bursts of electromagnetic radiation into the continuous-wave regime of a cyclotron maser formed in a magnetically confined non-equilibrium plasma (Shalashov A. G. et al., Phys. Rev. Lett., 114 (2018) 205001). The kinetic cyclotron instability of the extraordinary wave of a weakly inhomogeneous magnetized plasma is driven by the anisotropic electron population resulting from electron cyclotron plasma heating in a MHD-stable minimum-B open magnetic trap. In the present communication we focus on a theoretical model that explains the existing data and motivates further experiments.
PACS: 52.50.Sw – Plasma heating by microwaves; ECR, LH, collisional heating / 52.72.+v – Laboratory studies of space- and astrophysical-plasma processes / 52.35.-g – Waves, oscillations, and instabilities in plasmas and intense beams
© EPLA, 2018
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