Ponderomotive stabilization of flute modes in mirrors: Feedback control and numerical results

Journal Article · Mon Feb 02 00:00:00 EST 1987 · Phys. Rev. Lett.; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.58.495· OSTI ID:6766250

Similon, P L

Ponderomotive stabilization of rigid plasma flute modes is numerically investigated by use of a variational principle, for a simple geometry, without eikonal approximation. While the near field of the studied antenna can be stabilizing, the far field has a small contribution only, because of large cancellation by quasi mode-coupling terms. The field energy for stabilization is evaluated and is a nonnegligible fraction of the plasma thermal energy. A new antenna design is proposed, and feedback stabilization is investigated. Their use drastically reduces power requirements.

• Research Organization: Lawrence Berkeley Laboratory, University of California, Berkeley, California 94720 and Laboratory of Plasma Studies and Cornell Theory Center, Cornell University, Ithaca, New York 14853
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 6766250
• Journal Information: Phys. Rev. Lett.; (United States), Vol. 58:5
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ANTENNAS
DESIGN
FLUTE INSTABILITY
STABILIZATION
MAGNETIC MIRRORS
PLASMA MACROINSTABILITIES
PLASMA
NONLINEAR PROBLEMS
ELECTRIC POTENTIAL
FEEDBACK
NUMERICAL ANALYSIS
THEORETICAL DATA
VARIATIONAL METHODS
DATA
ELECTRICAL EQUIPMENT
EQUIPMENT
INFORMATION
INSTABILITY
MATHEMATICS
NUMERICAL DATA
OPEN PLASMA DEVICES
PLASMA INSTABILITY
THERMONUCLEAR DEVICES
700107* - Fusion Energy- Plasma Research- Instabilities