Strange Attractors in Drift Wave Turbulence

Lewandowski, Jerome L.V.

Princeton University. Plasma Physics Laboratory.

关键词: Attractors;    Numerical Simulation;    70 Plasma Physics And Fusion Technology;    Stellarators;    Chaos;   

DOI  :  10.2172/814755
RP-ID  :  PPPL-3863
RP-ID  :  AC02-76CH03073
RP-ID  :  814755

美国|英语

来源: UNT Digital Library

【 摘 要 】

There are growing experimental, numerical and theoretical evidences that the anomalous transport observed in tokamaks and stellarators is caused by slow, drift-type modes (such as trapped electron modes and ion-temperature gradient-driven modes). Although typical collision frequencies in hot, magnetized fusion plasmas can be quite low in absolute values, collisional effects are nevertheless important since they act as dissipative sinks. As it is well known, dissipative systems with many (strictly speaking more than two) degrees of freedom are often chaotic and may evolve towards a so-called attractor.