Flow shear suppression of turbulence using externally driven ion Bernstein and Alfven waves

Conference · Tue Jan 01 00:00:00 EST 1991

OSTI ID:5096324

Biglari, H; Ono, M ^[1]; Diamond, P H ^[2]; Craddock, G G ^[3]

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1. Princeton Univ., NJ (United States). Plasma Physics Lab.
2. California Univ., San Diego, La Jolla, CA (United States). Dept. of Physics
3. Science Applications International Corp., San Diego, CA (United States)

The utilization of externally-launched radio-frequency waves as a means of active confinement control through the generation of sheared poloidal flows is explored. For low-frequency waves, kinetic Alfven waves are proposed, and are shown to drive sheared E {times} B flows as a result of the radial variation in the electromagnetic Reynolds stress. In the high frequency regime, ion Bernstein waves are considered, and shown to generate sheared poloidal rotation through the ponderomotive force. In either case, it is shown that modest amounts of absorbed power ({approximately} few 100 kW) are required to suppress turbulence in a region of several cm radial width. 9 refs.

• Research Organization: Princeton Univ., NJ (United States). Plasma Physics Lab.
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-76CH03073; FG03-88ER53275
• OSTI ID: 5096324
• Report Number(s): PPPL-CFP-2472; CONF-910869-15; ON: DE92001834
• Resource Relation: Conference: 9. topical conference on radio frequency power in plasmas, Charleston, SC (United States), 12-14 Aug 1991
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA CONFINEMENT
ALFVEN WAVES
BERNSTEIN MODE
RF SYSTEMS
SHEAR
TURBULENT FLOW
CONFINEMENT
FLUID FLOW
HYDROMAGNETIC WAVES
OSCILLATION MODES
700101* - Fusion Energy- Plasma Research- Confinement
Heating
& Production