Magnetic drift kinetic damping of the resistive wall mode in large aspect ratio tokamaks

Journal Article · Mon Sep 15 04:00:00 EDT 2008 · Physics of Plasmas

DOI:https://doi.org/10.1063/1.2978091· OSTI ID:21269052

Yueqiang, Liu; Gimblett, C G; Hastie, R J ^[1]; Chu, M S ^[2]

---

1. Euratom/UKAEA Fusion Association, Culham Science Centre, Abingdon, OX14 3DB (United Kingdom)
2. General Atomics, San Diego, California 29186 (United States)

An analytical, large aspect ratio, calculation of the drift-kinetic energy perturbation is carried out for the resistive wall mode, due to the mode resonance with the magnetic precession drifts of trapped thermal ions and electrons. Four asymptotic cases are identified and analyzed in detail. Generally, a partial stabilization of the mode is possible thanks to the kinetic correction to the perturbed plasma energy. A complete stabilization can occur only in a narrow space of the plasma equilibrium parameters. Kinetic destabilization of the mode is also possible due to a finite pressure correction to the precession drift frequency.

• OSTI ID: 21269052
• Journal Information: Physics of Plasmas, Journal Name: Physics of Plasmas Journal Issue: 9 Vol. 15; ISSN PHPAEN; ISSN 1070-664X
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
ASPECT RATIO
ASYMPTOTIC SOLUTIONS
CORRECTIONS
DAMPING
DISTURBANCES
KINETIC ENERGY
PLASMA
PLASMA INSTABILITY
STABILIZATION
TOKAMAK DEVICES
WALLS