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Title: Hot plasma dielectric response to radio-frequency fields in inhomogeneous magnetic field

Hot plasma dielectric response models, which are now used in most linear full wave codes, are formulated in Fourier space assuming that particle's Larmor radius is much smaller than the scale of spatial nonuniformity of magnetic field. Such approximation assumes that the spatial scale of plasma dielectric response to the RF field is limited to a few Larmor radii, which is accurate for a limited range of wave frequencies ω. The scale of plasma dielectric response along the magnetic field line could be comparable to the scale of the magnetic field nonuniformity when ω is close to the particle's cyclotron frequency ωc or when ω is much smaller than ωc, which requires the use of a more accurate model. In the present approach, the hot plasma dielectric response is formulated in configuration space without limiting approximations by numerically calculating the plasma conductivity kernel based on the solution of the linearized Vlasov equation in nonuniform magnetic field. Results of the conductivity kernel calculation in hot collisionless plasma are presented for 1-D mirror and 2-D tokamak magnetic field configurations for ω~ω c. Here, self-consistent simulation of RF fields using the calculated conductivity kernel of 1-D mirror magnetic field is made.
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [2]
  1. FAR-TECH, Inc., San Diego, CA (United States)
  2. Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
Publication Date:
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 23; Journal Issue: 11; Journal ID: ISSN 1070-664X
American Institute of Physics (AIP)
Research Org:
FAR-TECH, Inc., San Diego, CA (United States)
Sponsoring Org:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Maxwell equations; Tokamaks; Linear equations; Mirrors; Cyclotron resonances; Plasma waves; Electric fields; Dielectric response; Magnetic fields
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1421200