Simulation studies on stability of hot electron plasma
Abstract
Stability of a hot electron plasma in a NBT(EBT)-like geometry is studied, using a 2-1/2 dimensional relativistic, electromagnetic particle code. In the simulation model, spatial variation is allowed only in the x- and y- directions, with the z-direction being an ignorable coordinate, although the particles have three velocity components (u sub x, v sub y, v sub z). The system is periodic in the y-direction and is bounded in the x-direction with total grid size L sub x xL sub y=128d x 128d, where d is the grid spacing. The external magnetic field B sub 0 is formed by an external current J sub 0 which is rigid and not influenced by the plasma. The external magnetic field B sub 0 points in the z-direction, and its strength decreases with x as 1/(x-Lx-2+R), where the constant R is a measure of the magnetic field gradient. The initial plasma density also decreases with x. All quantities are constant in the y-direction in the equilibrium state. Because both the external magnetic field and the plasma density (pressure) decreases with x, the plasma can be interchange unstable if there is no hot electron layer.
- Publication:
-
Transport in Open-Ended Systems
- Pub Date:
- March 1985
- Bibcode:
- 1985toes.work..112O
- Keywords:
-
- Beta Factor;
- Core Flow;
- Electromagnetic Radiation;
- Hot Electrons;
- Ion Cyclotron Radiation;
- Magnetic Fields;
- Models;
- Plasma Density;
- Relativistic Particles;
- Simulation;
- Stability;
- Toruses;
- Equilibrium;
- Larmor Radius;
- Linearity;
- Rates (Per Time);
- Plasma Physics