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Interfacial Stability of Spherically Converging Plasma Jets for Magnetized Target FusionA fusion propulsion scheme has been proposed that makes use of the merging of a spherical distribution of plasma jets to dynamically form a gaseous liner to implode a magnetized target to produce the fusion reaction. In this paper, a study is made of the interfacial stability of the interaction of these jets. Specifically, the Orr-Sommerfeld equation is integrated to obtain the growth rate of a perturbation to the primary flow at the interface between the colliding jets. The results lead to an estimate on the tolerances on the relative flow velocities of the merging plasma jets to form a stable, imploding liner. The results show that the maximum temporal growth rate of the perturbed flow at the jet interface is very small in comparison with the time to full compression of the liner. These data suggest that, as far as the stability of the interface between the merging jets is concerned, the formation of the gaseous liner can withstand velocity variation of the order of 10% between the neighboring jets over the density and temperature ranges investigated.
Document ID
20010021218
Document Type
Preprint (Draft being sent to journal)
Authors
Thio, Y. C. Francis (NASA Marshall Space Flight Center Huntsville, AL United States)
Cassibry, Jason (NASA Marshall Space Flight Center Huntsville, AL United States)
Wu, S. T. (NASA Marshall Space Flight Center Huntsville, AL United States)
Eskridge, Richard (NASA Marshall Space Flight Center Huntsville, AL United States)
Smith, James (NASA Marshall Space Flight Center Huntsville, AL United States)
Lee, Michael (NASA Marshall Space Flight Center Huntsville, AL United States)
Rodgers, Stephen L.
Date Acquired
August 20, 2013
Publication Date
January 1, 2000
Subject Category
Plasma Physics
Meeting Information
Plasma Physics(Quebec)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.