Abstract
A large-scale coaxial line filled with the plasma of RF discharge has been developed for laboratory modeling of the effects of the interaction of ultrashort electromagnetic pulses (EMPs) with the atmosphere and the ionosphere in the KROT facility. The oversized coaxial line ensures pulse transmission through an ionized medium in the TEM mode, which corresponds to the polarization of the transverse electromagnetic wave in free space, and in uniform isotropic plasma. The coaxial line has a length of 10 m and a diameter of 140 cm. The processes of propagation of the nanosecond and subnanosecond pulses in this line, in vacuum and with plasma, have been simulated numerically.
Highlights
Currently, researchers focus their attention on the phenomena of waveform transformation and the absorption of ultrawideband (UWB) electromagnetic pulses (EMPs) in the nanosecond range in the ionized atmosphere and ionosphere of the Earth
Similar models are necessary to understand the physics of high-altitude discharges, and the processes induced by lightning EMPs [9], including those in the presence of flows of high-energy charged particles
We describe a new instrument for studying the interaction of UWB EMPs with gas media in a large volume; the gigantic plasma-filled coaxial line for a large-scale plasma facility KROT at the Institute of Applied Physics of the Russian Academy of Sciences (IAP RAS, Nizhny Novgorod, Russia)
Summary
Researchers focus their attention on the phenomena of waveform transformation and the absorption of ultrawideband (UWB) electromagnetic pulses (EMPs) in the nanosecond range in the ionized atmosphere and ionosphere of the Earth. This includes nonlinear phenomena with account for the nonstationary kinetics of electrons [1,2,3], due to the development of UWB telecommunication systems with trans-ionospheric radio channels, technologies used to probe natural environments, and systems of space monitoring of natural and technogenic events.
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