- Abstract:
-
Sheared toroidal flows can cause bifurcations to zero-turbulent-transport states in tokamak plasmas. The maximum temperature gradients that can be reached are limited by subcritical turbulence driven by the parallel velocity gradient. Here it is shown that q/ϵ (magnetic field pitch/inverse aspect ratio) is a critical control parameter for sheared tokamak turbulence. By reducing q/ϵ, far higher temperature gradients can be achieved without triggering turbulence, in some instances comparable to...
Expand abstract - Publication status:
- Published
- Publisher copy:
- 10.1103/physrevlett.109.265001
-
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- Journal:
- Physical review letters
- Volume:
- 109
- Issue:
- 26
- Pages:
- 265001
- Publication date:
- 2012-12-05
- DOI:
- EISSN:
-
1079-7114
- ISSN:
-
0031-9007
- URN:
-
uuid:1a81211d-be67-4e20-8028-21573e7a2c6d
- Source identifiers:
-
320496
- Local pid:
- pubs:320496
- Language:
- English
- Keywords:
- Copyright date:
- 2012
- Notes:
- 5 Pages, 4 Figures, Submitted to PRL
Journal article
Zero-turbulence manifold in a toroidal plasma.
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