Beyond the Dipole: Levitated Rings Offer a New Window into Interchange Turbulence

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The book delves into the dynamics of magnetohydrodynamics (MHD), particularly focusing on the behavior of magnetic flux tubes within plasma. It describes how these tubes can interchange positions, leading to adiabatic cooling and heating due to changes in magnetic field strength. This process, known as electrostatic interchange instability, parallels the Rayleigh-Taylor instability found in neutral fluids. The text emphasizes the significance of magnetic topology and the conditions under which these instabilities occur, particularly in plasmas with unfavorable curvature.