Experimental study of the transition from the slab to the toroidal branch of the ion temperature gradient mode

Journal Article · Mon Jun 20 04:00:00 EDT 1994 · Physical Review Letters; (United States)

DOI:https://doi.org/10.1103/PhysRevLett.72.3997· OSTI ID:7032443

Chen, J; Sen, A K ^[1]

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1. Plasma Physics Laboratory, Columbia University, New York, New York 10027 (United States)

The transition from the slab to the toroidal branch of the ion temperature gradient (ITG) mode was studied by first exciting the slab (ITG) mode and gradually raising the magnetic curvature in the Columbia Linear Machine. Modest levels of magnetic curvature destablized and reduced the real frequency of the mode in accordance with the prediction from a simple theory. However, with further increase in mirror ratio and trapped particles, the observed mode amplitude decreased and the parallel wavelength greatly increased. This may be a hybrid ITG dissipative trapped electron mode.

• DOE Contract Number: FG02-87ER53257
• OSTI ID: 7032443
• Journal Information: Physical Review Letters; (United States), Journal Name: Physical Review Letters; (United States) Vol. 72:25; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
AMPLITUDES
ANNULAR SPACE
CLOSED CONFIGURATIONS
COLLISIONLESS PLASMA
CONFIGURATION
ELEMENTS
HYDROGEN
INSTABILITY
INSTABILITY GROWTH RATES
ION TEMPERATURE
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELDS
NONLINEAR PROBLEMS
NONMETALS
NUMERICAL SOLUTION
OSCILLATION MODES
PHYSICAL PROPERTIES
PLASMA
PLASMA INSTABILITY
ROTATING PLASMA
SLABS
SPACE
TEMPERATURE GRADIENTS
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
TOROIDAL CONFIGURATION