Generation of plasma flow in noise-driven Hasegawa-Mima model
- Authors
- Kim, Chang-Bae
- Issue Date
- Apr-2010
- Publisher
- IOP PUBLISHING LTD
- Citation
- NUCLEAR FUSION, v.50, no.4
- Journal Title
- NUCLEAR FUSION
- Volume
- 50
- Number
- 4
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/14776
- DOI
- 10.1088/0029-5515/50/4/045001
- ISSN
- 0029-5515
- Abstract
- The presence of macroscopic flows in hot plasmas is of great importance in nuclear fusion experiments. For pedagogical purposes, the spontaneous appearance of the flow is studied using the Hasegawa-Mima equation (HME) driven by external noise. The noise is assumed to model a bath of microscopic-scale turbulence. If the noise has a parity-nonconserving element, it is shown that an advective term associated with a uniform flow is inherently generated in the HME. A renormalization-group approach up to the lowest order is taken in the analysis of the asymptotic state. Parity-conserving noise is shown to lead to the renormalizations of field and viscosity and the critical dimensions are obtained.
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