2007/12/12 by Yan Levin, Renato Pakter, Tarcisio N. Teles · 1 citation
Physics and Astronomy · #cond-mat.stat-mech #physics.acc-ph #physics.plasm-ph
paper · pdf · doi:10.1103/physrevlett.100.040604
Accepted in Phys. Rev. Lett
arxiv created 2007/12/12 · arxiv updated 2009/12/01
A theoretical framework is presented which allows to quantitatively predict the final stationary state achieved by a non-neutral plasma during a process of collisionless relaxation. As a specific application, the theory is used to study relaxation of charged-particles beams. It is shown that a fully matched beam relaxes to the Lynden-Bell distribution. However, when a mismatch is present and the beam oscillates, parametric resonances lead to a core-halo phase separation. The approach developed accounts for both the density and the velocity distributions in the final stationary state.