Laser diagnostic methods for plasma sheath potential mapping and electric field measurement
This thesis presents the development of two laser diagnostic approaches for electric field measurements in plasmas and gases. Hall effect thrusters, and other electric propulsion devices, have limited lifetimes due to the erosion of components by ion bombardment of surfaces. A better understanding of the electric field structure in the plasma sheaths near these surfaces would enable researchers to improve thruster designs for extended lifetime and higher efficiency. The present work includes the development of a laser induced fluorescence technique employing a diode laser at 835 nm to measure ...
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