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Instability of field-aligned electron–cyclotron waves in a magnetic mirror plasma with anisotropic temperature

Published online by Cambridge University Press:  25 July 2016

N. I. Grishanov  and
N. A. Azarenkov
N. I. Grishanov*
Affiliation:
V. N. Karazin Kharkov National University, Svoboda Sq. 4, 61022 Kharkiv, Ukraine Ukrainian State University of Railway Transport, Feuerbach Sq. 7, 61050 Kharkiv, Ukraine
N. A. Azarenkov
Affiliation:
V. N. Karazin Kharkov National University, Svoboda Sq. 4, 61022 Kharkiv, Ukraine
*
†Email address for correspondence: [email protected]
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Abstract

Dispersion characteristics have been analysed for field-aligned electron–cyclotron waves (also known as right-hand polarized waves, extraordinary waves or whistlers) in a cylindrical magnetic mirror plasma including electrons with anisotropic temperature. It is shown that the instability of these waves is possible only in the range below the minimal electron–cyclotron frequency, which is much lower than the gyrotron frequency used for electron–cyclotron resonance power input into the plasma, under the condition where the perpendicular temperature of the resonant electrons is larger than their parallel temperature. The growth rates of whistler instability in the two magnetized plasma models, where the stationary magnetic field is either uniform or has a non-uniform magnetic mirror configuration, are compared.

Type
Research Article
Information
Journal of Plasma Physics , Volume 82 , Issue 4 , August 2016 , 905820402
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Copyright
© Cambridge University Press 2016 

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