Magnetically Driven Flows in Arched Plasma Structures
Laboratory experiments demonstrate high-speed plasma flows from both footpoints of arched magnetic flux tubes, resulting in bulk plasma transport into the flux tube and persistent axial collimation even as the flux tube lengthens and kinks. The measured flows are in agreement with the predictions of hoop force and collimation models involving fundamental MHD forces. These forces are expected to drive plasma acceleration in other open flux configurations with arched geometries, such as those found on the solar surface.
© 2012 American Physical Society, Received 12 August 2011; published 13 August 2012. This work was supported by NSF, U.S. DOE, and AFOSR.
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Published - PhysRevLett.109.075001.pdf
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Supplemental Material - flowspeeds-current_N_Ar.eps
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