Simulation of plasma generation by microwave power beaming

Abstract

Plasma generation in the atmosphere by microwave power beaming is an integral part of the design of a RF transmission system that uses a plasma cloud as a reflector. The microwave breakdown of air through avalanche ionization has been simulated on a computer. Focusing techniques using large heater array antennas have been explored and evaluated for their ability to create a plasma cloud at a prescribed location and inclination. These techniques include frequency chirping, random thinning of the heater array, discrete vertical scanning, and use of multiple heater pulses. The effects of these techniques on the shape, intensity, and gradient of the plasma cloud have been determined. Irregularities in the plasma cloud have been analyzed.<>