• DOI:10.1103/PhysRevE.100.013204
• Corpus ID: 84846783

Kinetic plasma waves carrying orbital angular momentum.

@article{Blackman2019KineticPW,
  title={Kinetic plasma waves carrying orbital angular momentum.},
  author={David R. Blackman and Rachel Nuter and Ph. A. Korneev and Vladimir T. Tikhonchuk},
  journal={Physical review. E},
  year={2019},
  volume={100 1-1},
  pages={
          013204
        }
}

• D. Blackman, R. Nuter, +1 author V. Tikhonchuk
• Published 21 March 2019
• Physics
• Physical review. E

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.