Title :
Effects of plasma parameters on viscosity
Author :
Dahi, Hossein ; Talmadge, Joseph N. ; Shohet, J. Leon
Author_Institution :
Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA
fDate :
12/1/1998 12:00:00 AM
Abstract :
A numerical code is developed to study the effect of ion density and temperature (as well as ion pressure and temperature gradients) on the amplitude of the local maxima of the poloidal viscosity with respect to the poloidal Mach number using the model developed by Shaing (1993). The sum of the poloidal viscosity and ion-neutral collisions is determined from the dependence of the plasma radial current on the radial electric field in a biased electrode experiment. The experimental results in the interchangeable module stellarator agree qualitatively with the predictions of the numerical calculation regarding the effects of variation of ion density and temperature on viscosity
Keywords :
ion density; plasma collision processes; plasma density; plasma pressure; plasma temperature; plasma toroidal confinement; viscosity; biased electrode experiment; interchangeable module stellarator; ion density; ion pressure gradients; ion temperature; ion temperature gradients; ion-neutral collisions; model; numerical calculation; numerical code; plasma parameters; plasma radial current; poloidal Mach number; poloidal viscosity; radial electric field; viscosity; Electrodes; Laboratories; Magnetic confinement; Plasma confinement; Plasma density; Plasma devices; Plasma temperature; Tokamaks; Toroidal magnetic fields; Viscosity;
Journal_Title :
Plasma Science, IEEE Transactions on
