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Instabilities Propagated Along the External Magnetic Field in Magnetized Active Plasmas
Author(s) -
Krstić S. R.,
Milić B. S.
Publication year - 1987
Publication title -
beiträge aus der plasmaphysik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.531
H-Index - 47
eISSN - 1521-3986
pISSN - 0005-8025
DOI - 10.1002/ctpp.19870270604
Subject(s) - physics , amplitude , plasma , quantum electrodynamics , magnetic field , wavelength , electromagnetic radiation , computational physics , field (mathematics) , atomic physics , quantum mechanics , mathematics , pure mathematics
The conditions for spontaneous onset of instabilities propagated along the external (stationary or quasi‐stationary) magnetic field in cold and magnetized active plasmas are considered in collisionless approximation. Attention is given to non‐resonant cases, i.e. to situations in which the modal frequencies of the wave significantly differ from the frequency of coherent electromagnetic radiation arising due to the active particles. It is shown that instabilities are also possible in these non‐resonant cases and that, under certain specified conditions, they develop only in a very narrow wavelength band. The pertaining amplitude increments are evaluated.