Open AccessAnalysis of the characteristics of low-frequency modes in a corrugated waveguide filled with plasma
Author(s) -
Huan Xie,
Pu-Kun Liu,
Chengyue Li,
Yan Yang,
Shenggang Liu
Publication year - 2004
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.53.3114
Subject(s) - dispersion relation , floquet theory , upper hybrid oscillation , physics , electromagnetic electron wave , plasma , plasma oscillation , oscillation (cell signaling) , wave propagation , dispersion (optics) , magnetic field , waveguide , wavenumber , beam (structure) , computational physics , optics , nonlinear system , quantum mechanics , biology , genetics
A corrugated waveguide filled with an infinitely thin annular plasma is immersed in a strong longitudinal magnetic field. By means of fluid model and linear field theorythe dispersion relation of the electromagnetic wave propagation along the system is derived. The dispersion characteristics and beamwave interactions of lowfrequency plasma modes are analyzed in two cases of various densities of plasma by numerical computation. It is found that the dispersion relation with out electron beam satisfies exactly the Floquet theorem and the frequency of electromagnetic wave could not be confined by plasma oscillation frequency. The low-frequency plasma modes can even be coupled with TM modes as the plasma density i s increased.