Dynamic and Stagnating Plasma Flow Leading to Magnetic-Flux-Tube Collimation
Highly collimated, plasma-filled magnetic-flux tubes are frequently observed on galactic, stellar, and laboratory scales. We propose that a single, universal magnetohydrodynamic pumping process explains why such collimated, plasma-filled magnetic-flux tubes are ubiquitous. Experimental evidence from carefully diagnosed laboratory simulations of astrophysical jets confirms this assertion and is reported here. The magnetohydrodynamic process pumps plasma into a magnetic-flux tube and the stagnation of the resulting flow causes this flux tube to become collimated.
© 2005 The American Physical Society. (Received 6 February 2005; published 22 July 2005) This work was supported by the U.S. DoE and NSF.
Published - YOUprl05.pdf
Submitted - 0506221.pdf