2008年1月
Multiscaling dynamics of impurity transport in drift-wave turbulence
PHYSICAL REVIEW LETTERS
- ,
- ,
- ,
- 巻
- 100
- 号
- 2
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevLett.100.025005
- 出版者・発行元
- AMER PHYSICAL SOC
Intermittency effects and the associated multiscaling spectrum of exponents are investigated for impurities advection in tokamak edge plasmas. The two-dimensional Hasagawa-Wakatani model of resistive drift-wave turbulence is used as a paradigm to describe edge tokamak turbulence. Impurities are considered as a passive scalar advected by the plasma turbulent flow. The use of the extended self-similarity technique shows that the structure function relative scaling exponent of impurity density and vorticity follows the She-Leveque model. This confirms the intermittent character of the impurities advection in the turbulent plasma flow and suggests that impurities are advected by vorticity filaments.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevLett.100.025005
- ISSN : 0031-9007
- eISSN : 1079-7114
- Web of Science ID : WOS:000252471200044