Nonlinear frequency shift of electrostatic waves in general collisionless plasma: unifying theory of fluid and kinetic nonlinearities

Autor: Liu, Chang, Dodin, Ilya Y.
Rok vydání: 2015
Předmět:
Zdroj: Phys. Plasmas 22, 082117 (2015)
Druh dokumentu: Working Paper
DOI: 10.1063/1.4928585
Popis: The nonlinear frequency shift is derived in a transparent asymptotic form for intense Langmuir waves in general collisionless plasma. The formula describes both fluid and kinetic effects simultaneously. The fluid nonlinearity is expressed, for the first time, through the plasma dielectric function, and the kinetic nonlinearity accounts for both smooth distributions and trapped-particle beams. Various known limiting scalings are reproduced as special cases. The calculation avoids differential equations and can be extended straightforwardly to other nonlinear plasma waves.
Databáze: arXiv