Kinetic plasma waves carrying orbital angular momentum

D. R. Blackman, R. Nuter, Ph. Korneev, and V. T. Tikhonchuk
Phys. Rev. E 100, 013204 – Published 15 July 2019

Abstract

The structure of Langmuir plasma waves carrying a finite orbital angular momentum is revised in the paraxial approximation. It is shown that the kinetic effects related to higher-order momenta of the electron distribution function lead to coupling of Laguerre-Gaussian modes and result in a modification of the wave dispersion and damping. The theoretical analysis is compared to the three-dimensional particle-in-cell numerical simulations for a mode with orbital momentum l=2. It is demonstrated that propagation of such a plasma wave is accompanied with generation of quasistatic axial and azimuthal magnetic fields which result from the orbital and longitudinal momenta transported with the wave, respectively.

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  • Received 25 March 2019

DOI:https://doi.org/10.1103/PhysRevE.100.013204

©2019 American Physical Society

Physics Subject Headings (PhySH)

Plasma Physics

Authors & Affiliations

D. R. Blackman1, R. Nuter1, Ph. Korneev2,3, and V. T. Tikhonchuk1,4

  • 1CELIA, University of Bordeaux, CNRS, CEA, F-33405 Talence, France
  • 2National Research Nuclear University “MEPhI” (Moscow Engineering Physics Institute), Moscow 115409, Russia
  • 3P. N. Lebedev Physics Institute, Russian Academy of Sciences, 119991 Moscow, Russia
  • 4ELI-Beamlines, Institute of Physics, Czech Academy of Sciences, 25241 Dolní Břežany, Czech Republic

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Issue

Vol. 100, Iss. 1 — July 2019

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