Transition from toroidal to slab temperature gradient driven modes

Journal Article · Wed May 01 00:00:00 EDT 1991 · Physics of Fluids B; (USA)

DOI:https://doi.org/10.1063/1.859808· OSTI ID:5534762

Kim, J; Horton, W ^[1]

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1. Institute for Fusion Studies, The University of Texas at Austin, Austin, Texas 78712 (USA)

In the local approximation the electrostatic dispersion relation for the (ion or electron) temperature gradient driven modes is solved retaining the full guiding-center resonance condition {omega}={ital k}{sub {parallel}}{ital v}{sub {parallel}}+{bold k}{center dot}{bold v}{sub {ital D}} ({ital v}{sup 2}{sub {perpendicular}},{ital v}{sup 2}{sub {parallel}}). Increase of the slab-to-toroidal ratio parameter {ital k}{sub {parallel}}{ital v}{sub {ital T}}/{ital k}{sub {perpendicular}}{ital v}{sub {ital D}} is shown to directly increase the threshold value of the temperature-to-density gradient parameter {eta}{sub {ital c}}. Therefore, the local anomalous heat flux has a strong dependence on the safety factor {ital q} when {ital k}{sub {parallel}}{similar to}1/{ital qR}.

• DOE Contract Number: FG05-80ET53088
• OSTI ID: 5534762
• Journal Information: Physics of Fluids B; (USA), Vol. 3:5; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
PLASMA
DISPERSION RELATIONS
DRIFT INSTABILITY
ELECTRON TEMPERATURE
GUIDING-CENTER APPROXIMATION
ION TEMPERATURE
RESONANCE
SLABS
TEMPERATURE GRADIENTS
THRESHOLD ENERGY
TOROIDAL CONFIGURATION
ANNULAR SPACE
CLOSED CONFIGURATIONS
CONFIGURATION
ENERGY
INSTABILITY
MAGNETIC FIELD CONFIGURATIONS
PLASMA INSTABILITY
PLASMA MICROINSTABILITIES
SPACE
700108* - Fusion Energy- Plasma Research- Wave Phenomena
700107 - Fusion Energy- Plasma Research- Instabilities