Dynamics of poloidal flows in enhanced reverse shear bifurcation

Journal Article · Fri Jul 15 00:00:00 EDT 2005 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.1942497· OSTI ID:20764395

Srinivasan, R; Avinash, K ^[1]

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1. Institute for Plasma Research, Bhat, Gandhinagar 382428 (India)

A simple reduced enhanced reverse shear (RERS) model is constructed to study the dynamics of poloidal flows during the ERS transition. This model predicts that a reversal of poloidal flow shear occurs just prior to the transition, as seen in experiment [R. E. Bell et al., Phys. Rev. Lett. 81, 1429 (1998)]. This transition front propagates until the radial location where the safety factor (q) is minimum and becomes locked there due to insufficient input power to overcome the threshold requirement for the bifurcation. This study also reveals that there can be many routes to ERS transition depending upon various tunable parameters.

• OSTI ID: 20764395
• Journal Information: Physics of Plasmas, Vol. 12, Issue 7; Other Information: DOI: 10.1063/1.1942497; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ACTINIUM COMPOUNDS
BIFURCATION
CHARGED-PARTICLE TRANSPORT
MAGNETIC CONFINEMENT
NONLINEAR PROBLEMS
PLASMA
SHEAR
TOKAMAK DEVICES