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Authors and Affiliations Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA, USA Yang Zhang, Seth Pree & Paul M. Bellan Contributions Y.Z. designed the braided loop experiment from the suggestions and guidance of P.M.B. S.P. built the X-ray camera from the suggestions and guidance of P.M.B. Y.Z. and S.P. performed the experiment. The interpretation of the results was done jointly by all authors. Y.Z. drafted the manuscript.
Abstract Convection in radial force fields is a fundamental process behind weather on Earth and the Sun, as well as magnetic dynamo action in both. Until now, benchtop experiments have been unable to study convection in radial force fields due to the inability to generate radial forces of sufficient strength. Recently, it has been appreciated that sound, when averaged over many cycles, exerts a force on density gradients in the gas it travels through.
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