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Title: Beyond linear gyrocenter polarization in gyrokinetic theory

Journal Article · · Physics of Plasmas
DOI:https://doi.org/10.1063/1.4823716· OSTI ID:22220600
 [1]
  1. Department of Physics, Saint Michael's College, Colchester, Vermont 05439 (United States)

The concept of polarization in gyrokinetic theory is clarified and generalized to include contributions from the guiding-center (zeroth-order) polarization as well as the nonlinear (second-order) gyrocenter polarization. The guiding-center polarization, which appears as the antecedent (zeroth-order) of the standard linear (first-order) gyrocenter polarization, is obtained from a modified guiding-center transformation. The nonlinear gyrocenter polarization is derived either variationally from the third-order gyrocenter Hamiltonian or directly by gyrocenter push-forward method.

OSTI ID:
22220600
Journal Information:
Physics of Plasmas, Vol. 20, Issue 9; Other Information: (c) 2013 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 1070-664X
Country of Publication:
United States
Language:
English