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Numerical Analysis of Symmetrical Waves Dispersion in a Nonisothermal Plasma Waveguide in a Magnetic Field
Author(s) -
Nikolov N. A.,
Dankov P. I.
Publication year - 1985
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.19850250606
Subject(s) - physics , dispersion relation , dispersion (optics) , plasma , plasma oscillation , magnetic field , electromagnetic electron wave , waveguide , electron , group velocity , waves in plasmas , ion acoustic wave , computational physics , condensed matter physics , optics , quantum mechanics
Dispersion equations of a nonisothermal plasma waveguide in a constant external magnetic field are derived, when the magnetic field intensity tends to infinity. The plasma electrons' thermal velocity are taken in mind. A numerical analysis of dispersion equations for the E‐ (TH‐) and H‐ (TE‐) waves is made. In the high‐frequency range it shows the possibility of the slow E‐waves exciting with a higher frequency than the electron Langmuir frequency. In the range near to the ion Langmuir frequency it shows the existence of waves with an anomalous dispersion. These waves are named low‐frequency backward E‐waves and it is shown, that in some frequency ranges they change the group velocity sign. The dispersion is investigated also in respect to the waveguide plasma filling.