Role of Ordinary to Extraordinary Mode Wave Coupling in Ionospheric Heating Experiments.
Abstract
Electromagnetic wave propagation in a plane stratified ionospheric plasma and its possible applications to high power, high frequency (HF) experiments are investigated. A theoretical and computational examination of ordinary to extraordinary mode wave coupling is made. This coupling occurs when the propagation is in the magnetic meridian, near the critical angle of incidence. The importance of the mode coupling phenomenon in ionospheric heating experiments is discussed and demonstrated with numerical full wave solutions of the generalized differential equations governing radiowave propagation in a stratified ionosphere. Computational results indicate that mode coupling leads to intense absorption of radiowave energy near the plasma resonance level. The angular shape of the coupling window, in which the coupling is most effective, is found to be approximately circular with its width being a function of the gradient of the electron density. Keywords: Ionospheric heating; Ordinary mode waves; Extraordinary mode waves; Full wave solution; Mode coupling; Plasma resonance level.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1988
- Accession Number
- ADA195335
Entities
People
- B. Abali
- K. Aydin
- T. A. Seliga
Organizations
- Ohio State University