Poloidal mode ballooning of trapped electron instability

Journal Article · Sat Dec 01 04:00:00 EST 1979 · Phys. Fluids; (United States)

DOI:https://doi.org/10.1063/1.862552· OSTI ID:5879889

Pandey, S R; Ross, D W

The effect of the magnetic moment dependence of the bounce averaged toroidal drift velocity on the eigenvalues and poloidal structure of the trapped electron mode is investigated in the radially local model. It is found that eigenvalues from the magnetic moment dependent dispersion relation deviate significantly from those of the constant drift velocity approximation for negative and large positive shear values. However, for shear ranging from rq/sup -1/ dq/dr=0.5 to 1.5, the trapped electron magnetic drift frequency can be approximated by ..omega../sub d/ew (0.4 + 0.8rq/sup -1/dq/dr), where ..omega../sub d/e is a constant, w is the particle kinetic energy, and q is the safety factor.

• Research Organization: Fusion Research Center, The University of Texas at Austin, Austin, Texas 78712
• OSTI ID: 5879889
• Journal Information: Phys. Fluids; (United States), Journal Name: Phys. Fluids; (United States) Vol. 22:12; ISSN PFLDA
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700107* -- Fusion Energy-- Plasma Research-- Instabilities
ANNULAR SPACE
CHARGED PARTICLES
CLOSED PLASMA DEVICES
CONFIGURATION
DISPERSION RELATIONS
EIGENVALUES
ELECTRONS
ELEMENTARY PARTICLES
EQUATIONS
FERMIONS
FOURIER ANALYSIS
INSTABILITY
INTEGRAL EQUATIONS
IONS
LARMOR RADIUS
LEPTONS
MAGNETIC MOMENTS
NUMERICAL SOLUTION
PLASMA DRIFT
PLASMA INSTABILITY
PLASMA MACROINSTABILITIES
SLABS
TEMPERATURE GRADIENTS
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TOROIDAL CONFIGURATION
TRAPPED ELECTRONS
TRAPPED-PARTICLE INSTABILITY
VELOCITY