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arXiv · 0712.1921

Collisionless relaxation in non-neutral plasmas

Yan Levin·Renato Pakter·Tarcisio N. Teles
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Abstract

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.

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Yan Levin, Renato Pakter, Tarcisio N. Teles. 2007-12-12. Collisionless relaxation in non-neutral plasmas. https://doi.org/10.1103/physrevlett.100.040604

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