Nonlinear electromagnetic gyrokinetic equations for rotating axisymmetric plasmas

Journal Article · Mon Aug 01 00:00:00 EDT 1994 · Physics of Plasmas; (United States)

DOI:https://doi.org/10.1063/1.870595· OSTI ID:7024911

Artun, M; Tang, W M ^[1]

---

1. Princeton University Plasma Physics Laboratory, P.O. Box 451, Princeton, New Jersey 08543-0451 (United States)

The influence of sheared equilibrium flows on the confinement properties of tokamak plasmas is a topic of much current interest. A proper theoretical foundation for the systematic kinetic analysis of this important problem has been provided here by presenting the derivation of a set of nonlinear electromagnetic gyrokinetic equations applicable to low-frequency microinstabilities in a rotating axisymmetric plasma. The subsonic rotation velocity considered is in the direction of symmetry, with the angular rotation frequency being a function of the equilibrium magnetic flux surface. In accordance with experimental observations, the rotation profile is chosen to scale with the ion temperature. The results obtained represent the shear flow generalization of the earlier analysis by Frieman and Chen [Phys. Fluids [bold 25], 502 (1982)], where such flows were not taken into account. In order to make it readily applicable to gyrokinetic particle simulations, this set of equations is cast in a phase-space-conserving continuity equation form.

• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7024911
• Journal Information: Physics of Plasmas; (United States), Vol. 1:8; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ROTATING PLASMA
PLASMA MICROINSTABILITIES
AXIAL SYMMETRY
DISTRIBUTION FUNCTIONS
ION TEMPERATURE
KINETIC EQUATIONS
SCALING LAWS
TOKAMAK DEVICES
CLOSED PLASMA DEVICES
EQUATIONS
FUNCTIONS
INSTABILITY
PLASMA
PLASMA INSTABILITY
SYMMETRY
THERMONUCLEAR DEVICES
700340* - Plasma Waves
Oscillations
& Instabilities- (1992-)