Ion-temperature-gradient instability driven transport and its parametric scaling

Journal Article · Wed Dec 01 04:00:00 EST 1993 · Physics of Fluids B; (United States)

DOI:https://doi.org/10.1063/1.860551· OSTI ID:5835520

Song, B; Sen, A K; Tham, P ^[1]

---

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

Experiments are reported on the ion thermal transport due to the ion-temperature- gradient-driven instability (ITG mode) and its transport scaling properties with respect to instability parameters like fluctuation level [ital [tilde n]]/[ital n][sub [ital i]] and linear growth rate as well as the drive parameter [eta][sub [ital i]](=[partial derivative] ln[[ital T][sub [ital i]]]/[partial derivative] ln[[ital n][sub [ital i]]]) in the Columbia Linear Machine [Phys. Fluids [bold 26], 1044 (1983)]. The measured local ion thermal conductivity [chi][sub [perpendicular]]([ital r]) is highly anomalous and strongly correlated with the radial profile of the ITG mode. The linear scaling of the averaged thermal conductivity [l angle][chi][sub [perpendicular]]([ital r])[r angle] with the averaged mode fluctuation level [l angle][ital [tilde n]]/[ital n][sub [ital i]][r angle] and linear growth rate indicates strong turbulence-type scaling. The scaling of [chi][sub [perpendicular]] with the drive parameter [eta][sub [ital i]] is offset linear.

• DOE Contract Number: FG02-87ER53257
• OSTI ID: 5835520
• Journal Information: Physics of Fluids B; (United States), Journal Name: Physics of Fluids B; (United States) Vol. 5:12; ISSN PFBPEI; ISSN 0899-8221
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700330 -- Plasma Kinetics
Transport
& Impurities-- (1992-)
700340* -- Plasma Waves
Oscillations
& Instabilities-- (1992-)
CLOSED PLASMA DEVICES
INSTABILITY
INSTABILITY GROWTH RATES
ION TEMPERATURE
PHYSICAL PROPERTIES
PLASMA DRIFT
PLASMA INSTABILITY
SCALING LAWS
SLABS
TEMPERATURE GRADIENTS
THERMAL CONDUCTIVITY
THERMODYNAMIC PROPERTIES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSPORT
TURBULENCE