Journal
NUCLEAR FUSION
Volume 62, Issue 6, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/1741-4326/ac5ad0
Keywords
axisymmetric MHD modes; energetic particle confinement and stability in magnetically confined plasmas; theory of tokamak fusion plasmas
Categories
Funding
- Euratom research and training programme [633053]
Ask authors/readers for more resources
This article presents a new type of fast particle instability involving axisymmetric modes in magnetic fusion tokamak plasmas. The relevant dispersion relation consists of three roots, and the resonant interaction with fast ions can drive the oscillatory roots unstable.
A new type of fast particle instability involving axisymmetric modes in magnetic fusion tokamak plasmas is presented. The relevant dispersion relation involves three roots. One corresponds to a vertical plasma displacement that, in the absence of active feedback stabilization, grows on the wall resistivity time scale. The other two, oscillating close to the poloidal Alfven frequency, are normally damped by wall resistivity. The resonant interaction with fast ions can drive the oscillatory roots unstable. Resonance conditions, stability thresholds and experimental evidence are discussed.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available