### Abstract

Language | English |
---|---|

Article number | 016406 |

Pages | 164061-164066 |

Number of pages | 6 |

Journal | Physical Review E |

Volume | 68 |

Issue number | 12 |

DOIs | |

Publication status | Published - 11 Jul 2003 |

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### Keywords

- damping
- mathematical models
- turbulent flow
- wave propagation
- turbulent spectrum
- plasma turbulence

### Cite this

*Physical Review E*,

*68*(12), 164061-164066. [016406]. https://doi.org/10.1103/PhysRevE.68.016406

}

*Physical Review E*, vol. 68, no. 12, 016406, pp. 164061-164066. https://doi.org/10.1103/PhysRevE.68.016406

**Resonant quasiparticles in plasma turbulence.** / Mendonça, J. T.; Bingham, R.; Shukla, P. K.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Resonant quasiparticles in plasma turbulence

AU - Mendonça, J. T.

AU - Bingham, R.

AU - Shukla, P. K.

PY - 2003/7/11

Y1 - 2003/7/11

N2 - A general view is proposed on wave propagation in fluids and plasmas where the resonant interaction of monochromatic waves with quasiparticles is considered. A kinetic equation for quasiparticles is used to describe the broadband turbulence interacting with monochromatic waves. Resonant interactions occur when the phase velocity of the long wavelength monochromatic wave is nearly equal to the group velocity of short wavelength wave packets, or quasiparticles, associated with the turbulent spectrum. It is shown that quasiparticle Landau damping can take place, as well as quasiparticle beam instabilities, thus establishing a direct link between short and large wavelength perturbations of the medium. This link is distinct from the usual picture of direct and inverse energy cascades, and it can be used as a different paradigm for the fluid and plasma turbulence theories.

AB - A general view is proposed on wave propagation in fluids and plasmas where the resonant interaction of monochromatic waves with quasiparticles is considered. A kinetic equation for quasiparticles is used to describe the broadband turbulence interacting with monochromatic waves. Resonant interactions occur when the phase velocity of the long wavelength monochromatic wave is nearly equal to the group velocity of short wavelength wave packets, or quasiparticles, associated with the turbulent spectrum. It is shown that quasiparticle Landau damping can take place, as well as quasiparticle beam instabilities, thus establishing a direct link between short and large wavelength perturbations of the medium. This link is distinct from the usual picture of direct and inverse energy cascades, and it can be used as a different paradigm for the fluid and plasma turbulence theories.

KW - damping

KW - mathematical models

KW - turbulent flow

KW - wave propagation

KW - turbulent spectrum

KW - plasma turbulence

UR - http://journals.aps.org/pre/

U2 - 10.1103/PhysRevE.68.016406

DO - 10.1103/PhysRevE.68.016406

M3 - Article

VL - 68

SP - 164061

EP - 164066

JO - Physical Review E

T2 - Physical Review E

JF - Physical Review E

SN - 1539-3755

IS - 12

M1 - 016406

ER -