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Charging And Discharging Of Lichtenberg Electrets, Monika Wood
Charging And Discharging Of Lichtenberg Electrets, Monika Wood
Master's Theses and Doctoral Dissertations
The research presented here describes a unique way to deposit a large amount of charge onto the surface of a thin dielectric sheet to create a Lichtenberg electret that can be discharged elsewhere to form spectacular Lichtenberg figures. This study examines how the amount of charge deposited onto the surface, the geometry of the probes, and the type of material used can all impact the formation of the Lichtenberg figures. Photographs of the Lichtenberg figures were taken and used to determine the voltage, current, and energy released during each discharge. It was found that a single discharge can release 0.49 …
A Multidimensional Characterization Of Muir Backscatter Spectra Resulting From Ionospheric Heating Experiments Performed At Haarp, Naseem Rayyan
A Multidimensional Characterization Of Muir Backscatter Spectra Resulting From Ionospheric Heating Experiments Performed At Haarp, Naseem Rayyan
Master's Theses and Doctoral Dissertations
The results of several atmospheric heating experiments, which we performed at the HAARP facility, are presented. We sought to provide a multidimensional characterization of the various artificial ionospheric heating features by varying HF aspect angle, HF pump frequency, UHF pointing angle, and heating pulse time. Through the use of the HAARP HF array and the MUIR UHF radar, we observed cascade (LDI), collapse (cavitons), parametric decay lines (PDI), outshifted plasma lines (OPL), overshoot, and artificial field aligned irregularities (AFAI), as well as some features that have not been previously studied, for instance, the “bursty” plasma lines. Through a collaborative effort …