Abstract

Nonlinear theory of an electron-Bernstein wave at lower-hybrid frequency is developed. Fluid theory is applied for the excitation of a lower-hybrid wave whereas a kinetic model is used for the electron-Bernstein mode as fluid theory breaks down for short-wavelength perturbations, and the propagation of these waves depends upon the cyclotron motion of the electrons about the field lines. The nonlinearity arises because of electrons motion, introduced through ponderomotive force. The electron-Bernstein wave is assumed to be excited by optical mixing of two microwave beams. The nonlinear dispersion relation and growth rates are calculated for three-wave and four-wave parametric interaction processes. Since the electron-Bernstein wave is nonlinearly excited by two intense beams, there is no power threshold and the excited power increases proportionally to the product of the incident powers. The investigation appears to be of great potential because of recent significant developments in gyrotron technology.

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call

Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.