Nonlinear ohmic dissipation in axisymmetric DC and RF driven rotating plasmas

An axisymmetric fully ionized plasma rotates around its axis when a charge separation between magnetic surfaces is produced from DC fields or RF waves. On each magnetic surface, both electrons and ions obey the isorotation law and perform an azimuthal E cross B rotation at the same angular velocity....

Full description

Saved in:

Bibliographic Details
Published in:	Physics of plasmas 2019-01, Vol.26 (1)
Main Authors:	Rax, J. M., Kolmes, E. J., Ochs, I. E., Fisch, N. J., Gueroult, R.
Format:	Article
Language:	eng
Subjects:	Angular momentum Angular velocity Centrifugal force Chlorophyll CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Coriolis force Coulomb collisions Ions Nonlinear response Ohmic dissipation Physics Plasma Physics Q factors Rotating plasmas Separation
Online Access:	Get full text
Tags:	Add Tag No Tags, Be the first to tag this record!

Description
Summary:	An axisymmetric fully ionized plasma rotates around its axis when a charge separation between magnetic surfaces is produced from DC fields or RF waves. On each magnetic surface, both electrons and ions obey the isorotation law and perform an azimuthal E cross B rotation at the same angular velocity. When Coulomb collisions are taken into account, such a flow displays no Ohmic current short circuiting of the charge separation and thus no linear dissipation. A nonlinear Ohmic response appears when inertial effects are considered, providing a dissipative relaxation of the charge separation between the magnetic surfaces. This nonlinear conductivity results from an interplay between Coriolis, centrifugal, and electron-ion collisional friction forces. This phenomenon is identified, described, and analyzed. In addition, both the quality factor of angular momentum storage and the efficiency of wave driven angular momentum generation are calculated and shown to be independent of the details of the charge separation processes.
ISSN:	1070-664X 1089-7674