DOI

10.17077/etd.7fmt1mf1

Document Type

Dissertation

Date of Degree

Fall 2017

Degree Name

PhD (Doctor of Philosophy)

Degree In

Physics

First Advisor

Skiff, Frederick Norman

First Committee Member

Baalrud, Scott

Second Committee Member

Goree, John

Third Committee Member

Howes, Greg

Fourth Committee Member

Ratner, Albert

Abstract

This thesis demonstrates a measurement of a plasma fluctuation velocity-space cross-correlation matrix using laser induced fluorescence. The plasma fluctuation eigenmode structure on the ion velocity distribution function can be empirically determined through singular value decomposition from this measurement. This decomposition also gives the relative strengths of the modes as a function of frequency. Symmetry properties of the matrix quantify systematic error. The relation between the eigenmodes and plasma kinetic fluctuation modes is explored. A generalized wave admittance is calculated for these eigenmodes. Since the measurement is a localized technique, it may be applied to plasmas in which a single point measurement is possible, multipoint measurements may be difficult, and a velocity sensitive measurement technique is available.

Keywords

experimental plasma physics, kinetic modes, laser induced fluorescence, laser spectroscopy, plasma diagnostics, small scale modes

Pages

xv, 122 pages

Bibliography

Includes bibliographical references (pages 118-122).

Copyright

Copyright © 2017 Sean Walter Mattingly

Included in

Physics Commons

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