Journal article
The gyrokinetic dispersion relation of microtearing modes in collisionless toroidal plasmas
- Abstract:
- We solve the linearized gyrokinetic equation, quasineutrality condition and Ampere's law to obtain the dispersion relation of microtearing modes (MTMs) in collisionless low-𝛽 toroidal plasmas. Consistent with past studies, we find that MTMs are driven unstable by the electron temperature gradient and that this instability drive is mediated by magnetic drifts. The dispersion relation that we derive can be evaluated numerically very quickly and may prove useful for devising strategies to mitigate MTM instability in fusion devices.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 589.4KB, Terms of use)
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- Publisher copy:
- 10.1017/s0022377824000175
Authors
- Publisher:
- Cambridge University Press
- Journal:
- Journal of Plasma Physics More from this journal
- Volume:
- 90
- Issue:
- 2
- Article number:
- 905900204
- Publication date:
- 2024-03-21
- Acceptance date:
- 2024-01-24
- DOI:
- EISSN:
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1469-7807
- ISSN:
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0022-3778
- Language:
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English
- Keywords:
- Pubs id:
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1921424
- Local pid:
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pubs:1921424
- Deposit date:
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2025-04-19
- ARK identifier:
Terms of use
- Copyright holder:
- Chandran and Schekochihin
- Copyright date:
- 2024
- Rights statement:
- © The Author(s), 2024. Published by Cambridge University Press. This is an Open Access article, distributed under the terms of the Creative Commons Attribution licence (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted re-use, distribution and reproduction, provided the original article is properly cited.
- Licence:
- CC Attribution (CC BY)
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