Two-dimensional simulation of cusp confinement of a plasma
- 1 October 1980
- journal article
- Published by IOP Publishing in Plasma Physics
- Vol. 22 (10-11) , 1015-1027
- https://doi.org/10.1088/0032-1028/22/10-11/006
Abstract
A two-dimensional particle-in-cell (PIC) simulation of a periodic 'picket fence' is described and used to study plasma behavior and confinement. A Lagrangian formulation which includes the invariance of the z-component of the generalized momentum is written as a time symmetric difference scheme in the electrostatic approximation. The results include the following features. The plasma settles into a steady state after a transient period. Positive charge peaks are formed in front of the 'fence' conductors. The potential develops a monotonically decreasing channel of the order of 0.5 Te/e in the cusp. The half-width of the leak in the cusp through which the ions escape is significantly smaller than the ion gyroradius.Keywords
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