Renormalized turbulence theory of ion pressure gradient driven drift modes

Technical Report · Fri Nov 01 04:00:00 EST 1985

OSTI ID:6155275

Hong, B G; Choi, D I; Horton, W Jr

From the nonlinear gyrokinetic equation we formulate the renormalized turbulence equation for the eta/sub i/-mode drift wave instability. The study shows that the dominant nonlinear damping mechanism is from the E x B convection of the pressure fluctuation and that the kinetic modifications to the fluid E x B mode coupling, studied earlier, shift the spectrum toward the shorter wavelengths. Balancing the linear growth rate with the nonlinear dampling rate at the linearly most unstable region, we calculate the anomalous ion thermal conductivity which exceeds the neoclassical plateau formula and gives a value of the same order as that previously computed by Horton, Choi and Tank, but with a kinetic enhancement factor. Also, the thermal conductivity formula remains finite for vanishing density gradient. 23 refs.

• Research Organization: Texas Univ., Austin (USA); Korea Advanced Inst. of Science and Technology, Seoul (Republic of Korea)
• DOE Contract Number: FG05-80ET53088
• OSTI ID: 6155275
• Report Number(s): DOE/ET/53088-198; IFSR-198; ON: DE86004561
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
ALCATOR DEVICE
CLOSED PLASMA DEVICES
DAMPING
DRIFT INSTABILITY
INSTABILITY
INSTABILITY GROWTH RATES
PHYSICAL PROPERTIES
PLASMA DRIFT
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
PLASMA SIMULATION
REACTOR FUELING
SIMULATION
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TURBULENCE
WKB APPROXIMATION