Laboratory Experiments of High Mach Number Raditaive Jets

Details Laboratory Experiments of High Mach Number Raditaive Jets Laboratory Experiments of High Mach Number Raditaive Jets

May 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...198.6409f&link_type=abstract

American Astronomical Society, 198th AAS Meeting, #64.09; Bulletin of the American Astronomical Society, Vol. 33, p.884

Astronomy and Astrophysics

Astrophysics

Scientific paper

We present astrophysically relevent experiments on the generation of a highly supersonic plasma jet by a convergent plasma flow. The flow is produced by electrodynamic acceleration of plasma in a conical array of fine metallic wires (a modification of the wire array Z-pinch). Stagnation of the plasma flow on the axis of symmetry forms a standing conical shock, which effectively collimates the flow in the axial direction. This scenario is essentially similar to that discussed by Cantó et al 1988 as a possible, purely hydrodynamic mechanism of jet formation in young stellar objects. Experiments using different materials (Al, Fe and W) show that a highly supersonic (M 20) and a well-collimated jet is generated when the radiative cooling rate of the plasma is significant. The interaction of this jet with a plasma target could be used for scaled laboratory astrophysical experiments on hydrodynamic instabilities in decelerated plasma flow.

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