Hot plasma dielectric response to radio-frequency fields in inhomogeneous magnetic field
Abstract
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∼ωc. Self-consistent simulation of RF fields using the calculated conductivity kernel of 1-D mirror magnetic field is made. A new parallel fullmore »
- Authors:
-
- FAR-TECH, Inc., San Diego, CA (United States)
- Univ. of Nebraska-Lincoln, Lincoln, NE (United States)
- Publication Date:
- Research Org.:
- FAR-TECH, Inc., San Diego, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- OSTI Identifier:
- 1461203
- Alternate Identifier(s):
- OSTI ID: 1421200
- Grant/Contract Number:
- SC0011863
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 23; Journal Issue: 11; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; Maxwell equations; Tokamaks; Linear equations; Mirrors; Cyclotron resonances; Plasma waves; Electric fields; Dielectric response; Magnetic fields
Citation Formats
Svidzinski, V. A., Kim, J. S., Spencer, J. A., Zhao, L., Galkin, S. A., and Evstatiev, E. G. Hot plasma dielectric response to radio-frequency fields in inhomogeneous magnetic field. United States: N. p., 2016.
Web. doi:10.1063/1.4966638.
Svidzinski, V. A., Kim, J. S., Spencer, J. A., Zhao, L., Galkin, S. A., & Evstatiev, E. G. Hot plasma dielectric response to radio-frequency fields in inhomogeneous magnetic field. United States. https://doi.org/10.1063/1.4966638
Svidzinski, V. A., Kim, J. S., Spencer, J. A., Zhao, L., Galkin, S. A., and Evstatiev, E. G. Tue .
"Hot plasma dielectric response to radio-frequency fields in inhomogeneous magnetic field". United States. https://doi.org/10.1063/1.4966638. https://www.osti.gov/servlets/purl/1461203.
@article{osti_1461203,
title = {Hot plasma dielectric response to radio-frequency fields in inhomogeneous magnetic field},
author = {Svidzinski, V. A. and Kim, J. S. and Spencer, J. A. and Zhao, L. and Galkin, S. A. and Evstatiev, E. G.},
abstractNote = {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∼ωc. Self-consistent simulation of RF fields using the calculated conductivity kernel of 1-D mirror magnetic field is made. A new parallel full wave RF code, based on the presented approach of accurate self-consistent modeling of plasma dielectric response in configuration space, is under development.},
doi = {10.1063/1.4966638},
journal = {Physics of Plasmas},
number = 11,
volume = 23,
place = {United States},
year = {Tue Nov 01 00:00:00 EDT 2016},
month = {Tue Nov 01 00:00:00 EDT 2016}
}
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