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Three-wave Interaction and Manley-Rowe Relations in Spin Plasmas
Umeå University, Faculty of Science and Technology, Department of Physics.
2014 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this thesis we present a fluid model for plasmas which include spin contributions. Also, how to use the model is discussed. We then consider non-linear theories, such as coupled mode theory. The main theory considered is the Manley-Rowe relations for the coupling coefficients. It is easier to work with wave energy densities rather than amplitudes to show Manley-Rowe relations. Manley-Rowe relations are used, both as a test for a theory, showing that the theory has an underlying Hamiltonian structure, and when considering parametric instabilities of the waves. We define a linearised wave energy density for spin plasmas and demonstrate a Manley-Rowe relation for a given geometry for the waves.

Place, publisher, year, edition, pages
2014.
National Category
Fusion, Plasma and Space Physics
Identifiers
URN: urn:nbn:se:umu:diva-106676OAI: oai:DiVA.org:umu-106676DiVA: diva2:843886
Subject / course
Fysik D - examensarbete
Educational program
Master's Programme in Physics
Available from: 2015-10-29 Created: 2015-07-31 Last updated: 2015-10-29Bibliographically approved

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ReferencesLink to record
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