A new Hamiltonian method in nonlinear gyrokinetic theory
作者:
W. K. Hagan,
E. A. Frieman,
期刊:
Physics of Fluids(00319171)
(AIP Available online 1985)
卷期:
Volume 28,
issue 9
页码: 2641-2643
ISSN:0031-9171
年代: 1985
DOI:10.1063/1.865223
出版商: AIP
数据来源: AIP
摘要:
Nonlinear gyrokinetic theory for a general magnetic field in the low‐beta approximation is derived using a new Hamiltonian method. Gyroaveraged equations resulting from Hamiltonian procedures based on Darboux and Lie transform techniques [Phys. Fluids24, 1730 (1981)] exhibit an unphysical dependence on the unit vectors used to describe the velocity perpendicular to the local magnetic field. The new method removes this unphysical dependence by modifying the Darboux algorithm and establishes the relationship between Hamiltonian gyrokinetic theory and the standard explicitly gyroaveraged theory.
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