Title :
Equilibrium, stability, and transport of electron plasmas in the Columbia Non-neutral Torus
Author :
Berkery, J.W. ; Marksteiner, Q.R. ; Hahn, M.S. ; Pedersen, T.Sunn ; de Gevigney, B.Durand ; Brenner, P.W. ; Mendez, J.M.
Author_Institution :
Dept. of Applied Physics and Applied Mathematics, Columbia University, New York, U.S.A.
Abstract :
The equilibrium, stability and transport properties of electron plasmas confined on magnetic surfaces in the Columbia Non-neutral Torus are discussed. The equilibrium is characterized by a Poisson-Boltzmann equation. Measured potential and temperature profiles are presented. These plasmas are generally stable but can be destabilized by an ion driven instability that involves the interaction of the ion and electron fluids and has a poloidal mode number of m = 1. The transport of electrons driven by collisions with neutrals is much greater than the neoclassical prediction. A code has been written to follow single particle motion to determine why. Finally, sudden jumps between different equilibria with different transport levels are being investigated.
Keywords :
Electrons; Magnetic confinement; Magnetic properties; Plasma confinement; Plasma measurements; Plasma properties; Plasma stability; Plasma temperature; Plasma transport processes; Temperature measurement;
Conference_Titel :
Pulsed Power Conference, 2007 16th IEEE International
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0913-6
Electronic_ISBN :
978-1-4244-0914-3
DOI :
10.1109/PPPS.2007.4651854
