Effect of collisionality and diamagnetism on the plasma dynamo

Journal Article · Mon Aug 07 00:00:00 EDT 1995 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.75.1086· OSTI ID:113037

Ji, H; Yagi, Y; Hattori, K; Almagri, A F; Prager, S C; Hirano, Y; Sarff, J S; Shimada, T; Maejima, Y; Hayase, K ^[1]

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1. Plasma Physics Laboratory, Princeton University, P.O. Box 451, Princeton, New Jersey 08543 (United States)

Fluctuation-induced dynamo electric fields are measured over a wide range of electron collisionality in the edge of TPE-1RM20 reversed-field pinch (RFP). In the collisionless region the magnetohydrodynamic dynamo alone can sustain the parallel current, while in the collisional region a new dynamo mechanism resulting from the fluctuations in the electron diamagnetic drift becomes dominant. A comprehensive picture of the RFP dynamo emerges by combining with earlier results from MST and REPUTE RFPs.

• OSTI ID: 113037
• Journal Information: Physical Review Letters, Vol. 75, Issue 6; Other Information: PBD: 7 Aug 1995
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION
REVERSE-FIELD PINCH
ELECTRIC FIELDS
PLASMA
FLUCTUATIONS
MAGNETOHYDRODYNAMICS
MAGNETIC FIELDS
COLLISIONS
ELECTRONS