Plasma current resonance in asymmetric toroidal systems
Abstract
The well-known singularity in the magnetic differential equation for plasma current in an asymmetric toroidal confinement system is resolved by including in the pressure tensor corrections stemming from finite Larmor radius. The result provides an estimate of the amplitude of spikes in the parallel current that occur on rational magnetic surfaces. Further, resolution of the singularity is shown to depend on both the ambipolarity condition—the requirement of zero surface-averaged radial current—and the form of the magnetic differential equation near the rational surface.
- Authors:
-
- Univ. of Texas, Austin, TX (United States)
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
- Publication Date:
- Research Org.:
- Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); University of Texas at Austin
- OSTI Identifier:
- 1897658
- Alternate Identifier(s):
- OSTI ID: 1229684
- Grant/Contract Number:
- FG02-91ER54109; ER54742; DOE ER54742
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 22; Journal Issue: 9; 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; plasma confinement; plasma collisions; plasma heating; thermodynamic states and processes; Fourier analysis; generalized functions; magnetic fields; plasma properties and parameters; Tokamaks; transport properties
Citation Formats
Hazeltine, R. D., and Catto, Peter J. Plasma current resonance in asymmetric toroidal systems. United States: N. p., 2015.
Web. doi:10.1063/1.4932000.
Hazeltine, R. D., & Catto, Peter J. Plasma current resonance in asymmetric toroidal systems. United States. https://doi.org/10.1063/1.4932000
Hazeltine, R. D., and Catto, Peter J. Tue .
"Plasma current resonance in asymmetric toroidal systems". United States. https://doi.org/10.1063/1.4932000. https://www.osti.gov/servlets/purl/1897658.
@article{osti_1897658,
title = {Plasma current resonance in asymmetric toroidal systems},
author = {Hazeltine, R. D. and Catto, Peter J.},
abstractNote = {The well-known singularity in the magnetic differential equation for plasma current in an asymmetric toroidal confinement system is resolved by including in the pressure tensor corrections stemming from finite Larmor radius. The result provides an estimate of the amplitude of spikes in the parallel current that occur on rational magnetic surfaces. Further, resolution of the singularity is shown to depend on both the ambipolarity condition—the requirement of zero surface-averaged radial current—and the form of the magnetic differential equation near the rational surface.},
doi = {10.1063/1.4932000},
journal = {Physics of Plasmas},
number = 9,
volume = 22,
place = {United States},
year = {Tue Sep 29 00:00:00 EDT 2015},
month = {Tue Sep 29 00:00:00 EDT 2015}
}
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