Title

Study of magnetic damping in liquid metal surface waves

Poster Number

15

Format

Poster Presentation

Abstract/Artist Statement

Knowledge of liquid metal surface waves and instabilities provides insight regarding turbulence in plasmas and the magnetohydrodynamic(MHD) model used to describe plasmas generally. Such work is also critical in the development of liquid lithium walls to be used in fusion reactors. The Liquid Metal Experiment (LMX) is designed to study magnetically induced damping of liquid gallium surface waves by driving such waves in the presence of a magnetic field. Previous work measured the dispersion relation and confirmed that a magnetic field aligned perpendicularly to the direction of wave propagation has no effect. More recent findings have demonstrated that a magnetic field aligned parallel to the direction of wave propagation causes significant damping of the waves which follows a gaussian dependence, and confirmed that the wave number varies in the presence of a magnetic field.

Location

Pacific Geosciences Center

Start Date

20-4-2002 9:00 AM

End Date

20-4-2002 5:00 PM

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Apr 20th, 9:00 AM Apr 20th, 5:00 PM

Study of magnetic damping in liquid metal surface waves

Pacific Geosciences Center

Knowledge of liquid metal surface waves and instabilities provides insight regarding turbulence in plasmas and the magnetohydrodynamic(MHD) model used to describe plasmas generally. Such work is also critical in the development of liquid lithium walls to be used in fusion reactors. The Liquid Metal Experiment (LMX) is designed to study magnetically induced damping of liquid gallium surface waves by driving such waves in the presence of a magnetic field. Previous work measured the dispersion relation and confirmed that a magnetic field aligned perpendicularly to the direction of wave propagation has no effect. More recent findings have demonstrated that a magnetic field aligned parallel to the direction of wave propagation causes significant damping of the waves which follows a gaussian dependence, and confirmed that the wave number varies in the presence of a magnetic field.