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Phase-space Lagrangian derivation of electrostatic gyrokinetics in general geometry

Abstract:

Gyrokinetic theory is based on an asymptotic expansion in the small parameter $\epsilon$, defined as the ratio of the gyroradius and the characteristic length of variation of the magnetic field. In this article, this ordering is strictly implemented to compute the electrostatic gyrokinetic phase-space Lagrangian in general magnetic geometry to order $\epsilon^2$. In particular, a new expression for the complete second-order gyrokinetic Hamiltonian is provided, showing that in a rigorous treat...

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Publication status:
Published

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Journal:
Plasma Physics and Controlled Fusion More from this journal
Volume:
53
Issue:
4
Pages:
045001
Publication date:
2010-09-02
DOI:
EISSN:
1361-6587
ISSN:
0741-3335
Language:
English
Keywords:
Pubs id:
pubs:196003
UUID:
uuid:0c18fb07-5169-4f21-84a5-47456c20d92c
Local pid:
pubs:196003
Source identifiers:
196003
Deposit date:
2015-02-24

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