Physics – Plasma Physics
Scientific paper
May 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agusmsm33a..05s&link_type=abstract
American Geophysical Union, Fall Meeting 2007, abstract #SM33A-05
Physics
Plasma Physics
7807 Charged Particle Motion And Acceleration, 7846 Plasma Energization, 2720 Energetic Particles: Trapped, 2774 Radiation Belts, 2794 Instruments And Techniques
Scientific paper
The interaction of rotating magnetic fields with plasmas is fundamental plasma physics problem with implications to fusion related Field-Reversed Configuration (FRC) configurations, space propulsion, astronaut protection from cosmic rays in long interstellar travel, control of energetic population in the radiation belts and near zone processes in pulsar magnetospheres. Despite its importance the basic plasma physics understanding of the interaction of rotating magnetic fields with magneto-plasmas, the scaling laws that control it and the range of potential applications to space plasmas remains unexplored. In this study, we focus on studying current drive in Space Plasma with RMF rotation rates satisfying (electron gyro-frequency) > RMF rotation rate >> (ion gyro-frequency) so that ion dynamics can be neglected. The relevant physics in this regime can be described by the so-called EMHD equations. This description neglects displacement current and plasma oscillations by enforcing quasi-neutrality. An important ingredient of the description is the presence of the Hall current and retention of the electron inertia. A spherical-coordinate-based EMHD code is developed and applied to study current drive with rotating magnet in plasma with magnetic field strength B much larger than the ambient magnetic field Bo. The current will modify the B field dependence on the distance to B~1/r**n. This study will investigate the value of n and determine the resultant magnetic profile as a function of the rotating speed relatively to the particle gyro-frequencies and plasma parameters.
Joyce Geoffrey
Papadopoulos Konstantinos
Shao Xiaofeng
No associations
LandOfFree
Modeling Current Drive in Space Plasma with Rotating Magnetic Field (RMF) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Modeling Current Drive in Space Plasma with Rotating Magnetic Field (RMF), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modeling Current Drive in Space Plasma with Rotating Magnetic Field (RMF) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1027255