Back to Search Start Over

On the Quasicollisionality of Plasmas with Small-Scale Electric Turbulence

Authors :
Brett Keenan
Mikhail V. Medvedev
Publication Year :
2016
Publisher :
arXiv, 2016.

Abstract

Chaotic electromagnetic fields are common in many relativistic plasma environments, where they can be excited by instabilities on kinetic spatial scales. When strong electric fluctuations exist on sub-electron scales, they may lead to small-angle, stochastic deflections of the electrons' pitch-angles. Under certain conditions, this closely resembles the effect of Coulomb collisions in collisional plasmas. The electric pitch-angle diffusion coefficient acts as an effective collision -- or "quasi-collision" -- frequency. We show that quasi-collisions may radically alter the expected radiative transport properties of candidate plasmas. In particular, we consider the quasi-collisional generalization of the classical Faraday effect.<br />Comment: 6 pages, 2 figures

Details

Database :
OpenAIRE
Accession number :
edsair.doi.dedup.....b072ac22e6934b58b1dd0ba9318c6659
Full Text :
https://doi.org/10.48550/arxiv.1601.00983