Weibel instability beyond bi-Maxwellian anisotropy.
basic_science · Level V
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- Record sourced from PubMed, PMID 34654095.
- Also identified by DOI 10.1103/PhysRevE.104.035201.
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Abstract
The shape of the anisotropic velocity distribution function, beyond the realm of strict Maxwellians can play a significant role in determining the evolution of the Weibel instability dictating the dynamics of self-generated magnetic fields. For non-Maxwellian distribution functions, we show that the direction of the maximum growth rate wave vector changes with shape. We investigate different laser-plasma interaction model distributions which show that their Weibel generated magnetic fields may require closer scrutiny beyond the second moment (temperature) anisotropy ratio characterization.