Abstract
We discuss the tunneling of quasi-optical wave beams through the evanescent region near the plasma cutoff in magnetized plasmas with density fluctuations. A model is proposed that describes the effect of a random modulation of a wave phase induced by the fluctuations along the propagation path on the efficiency of linear coupling between the ordinary and extraordinary waves in a two-dimensional geometry that suits well the toroidal magnetic systems. An analytical formula is derived that relates the averaged coupling efficiency and the phase correlation function of a random wave beam. Thresholds are found for the correlation length of the random phase and the length of the beam path, above which the density fluctuations become the dominant effect, and the importance of two-dimensional effects is shown. The analytical results are verified with full-wave numerical calculations.
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 callDisclaimer: 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.
