Plasma Physics approach for the Interaction of Electromagnetic Wave with Ionosphere

Abstract

Abstract : The concept of ionospheric modifications is a part of a much more common class of research today known as "Active Experiments" in auroral plasma. The interaction of High power electromagnetic Radio waves with auroral plasma is one of that field which has been have been investigated by this study. Plasma in that auroral region might be illuminated via electromagnetic waves for a prolonged period and therefore, undergo accumulative resonances and perturbations due to its slow transport rates, weak convection and long lifetime of plasma, mainly nearby the peak of profile of ionospheric electron density. A plasma can be resonance at a particular height in the ionosphere includes a equivalent electromagnetic wave frequency. These types of plasma resonances are able to improve the local fields of electromagnetic, and as a result their interactions with plasma particles causing density perturbations, turbulences, field aligned striations and local heating. These kinds of effects will be more obvious when the electromagnetic wave frequency is close to foF2, the resonance frequency nearby the peak of the profile of ionospheric electron density. Optical emissions may also be enhanced during such conditions. This work aim to investigate the interaction of EM with ionosphere layers D, E and F. The simulation model run under COMSOL Multiphasic software. The EM selected to be at 10MHz and 2.4GH, the electron density has been taken to be (10 8 , 10 10 and 10 11 ) for D, E, F ionospheric layers respectively. The simulation results have been recorded and analyzed for: electron temperature of plasma, electron density of plasma, electric potential of plasms, resistive losses, electric field norm and the relation between the input port power and the time. The results provide a clear and important information about interaction of EM with ionosphere that can help to predicate there transmission and its range for many purpose.