MHD TURBULENCE IN RADIATING INTENSE Z-PINCHES

Citation
Li. Rudakov et Rn. Sudan, MHD TURBULENCE IN RADIATING INTENSE Z-PINCHES, Physics reports, 283(1-4), 1997, pp. 253-263
Citations number
22
Categorie Soggetti
Physics
Journal title
ISSN journal
03701573
Volume
283
Issue
1-4
Year of publication
1997
Pages
253 - 263
Database
ISI
SICI code
0370-1573(1997)283:1-4<253:MTIRIZ>2.0.ZU;2-R
Abstract
A model for the physical processes that could occur in the turbulent i nterior of an imploding, radiating, intense Z-pinch is outlined. In th is model the nonlinear evolution of the m = 0 pinch instability leads to the formation of tangled loops of magnetic flux that are jostled ab out by turbulent components of the velocity in the interior of the pin ch. The pressure generated by the turbulent components of the velocity and magnetic field resist the implosive pressure from the pinch curre nt and thus radiative collapse is prevented. A scaling law for the fin al collapse radius is obtained. Under certain conditions a ''cold turb ulent pinch'' is predicted in which the radiated power is strongly dec reased.