Ham, C. J., Cowley, S. C., Brochard, G. et al. (1 more author) (2016) Nonlinear Stability and Saturation of Ballooning Modes in Tokamaks. Physical Review Letters. 235001. ISSN 1079-7114
Abstract
The theory of tokamak stability to nonlinear "ballooning" displacements of elliptical magnetic flux tubes is presented. Above a critical pressure profile the energy stored in the plasma may be lowered by finite (but not infinitesimal) displacements of such tubes (metastability). Above a higher pressure profile, the linear stability boundary, such tubes are linearly and nonlinearly unstable. The predicted saturated flux tube displacement can be of the order of the pressure gradient scale length. Plasma transport from these displaced flux tubes may explain the rapid loss of confinement in some experiments.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016 American Physical Society. This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Physics (York) |
Depositing User: | Pure (York) |
Date Deposited: | 01 Jun 2017 09:00 |
Last Modified: | 16 Oct 2024 13:07 |
Published Version: | https://doi.org/10.1103/PhysRevLett.116.235001 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1103/PhysRevLett.116.235001 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:117152 |