Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 5 of 5 for “"Plasma Electron Density"”.
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Plasma Electron Density Measurement Using Homodyne and Heterodyne Interferometers
Measurement of the electron density in a plasma using interferometry. Two different interferometer designs, homodyne and heterodyne are studied in two fusion reactor systems namely Tokamak and flow through Z-pinch device.
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Virtual metrology for plasma etch processes.
Plasma processes can present dicult control challenges due to time-varying dynamics and a lack of relevant and/or regular measurements. Virtual metrology (VM) is the use of mathematical models with accessible measurements from an operating process to estimate variables of interest. This thesis …
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Nearly Monoenergetic Positive Ion Beam with Self-Neutralized Space Charge Extracted from a Pulsed Plasma and Its Application
… neutralization of an ion beam extracted from a plasma is crucial for advanced plasma processes which require precise control of the ion flux and the width of the ion energy distribution (IED). In previous studies, filaments thermionically emitting electrons were used for neutralizing the space …
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Bayesian modelling of nuclear fusion experiments
… given multiple heterogeneous data sets. Fusion plasmas are complex physical systems, in which charged particles are confined by the electromagnetic force. The physics parameters of the plasmas involve various independent measurements from sophisticated scientific instruments. Owing to the …
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Design of Microwave Front-End Narrowband Filter and Limiter Components
… bent hairpin filter with encapsulated gas plasma elements to create a filter-limiter: a novel narrowband filterwith integral HPM limiter behavior. An equivalent circuit model is presented for the ac-coupled plasma-shell components used in this dissertation, and parameter values were …