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Multiscale Gyrokinetics for Rotating Tokamak Plasmas II: Reduced Models for Electron Dynamics

Abstract:

In this paper, we extend the multiscale approach developed in [Abel et. al., Rep. Prog. Phys., submitted] by exploiting the scale separation between ions and the electrons. The gyrokinetic equation is expanded in powers of the electron to ion mass ratio, which provides a rigorous method for deriving the reduced electron model. We prove that ion-scale electromagnetic turbulence cannot change the magnetic topology, and argue that to lowest order the magnetic field lies on fluctuating flux surfa...

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Publication status:
Published

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Journal:
New J. Phys. More from this journal
Volume:
15
Issue:
2
Pages:
023041
Publication date:
2012-10-04
DOI:
EISSN:
1367-2630
ISSN:
1367-2630
Language:
English
Keywords:
Pubs id:
pubs:353662
UUID:
uuid:c904e24b-1ba1-4edd-9856-2fb57625fd60
Local pid:
pubs:353662
Source identifiers:
353662
Deposit date:
2013-11-16

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