dorsal/arxiv
View SchemaSelf-consistent Langmuir waves in resonantly driven thermal plasmas
| Authors | R. R. Lindberg, A. E. Charman, J. S. Wurtele |
|---|---|
| Categories | |
| ArXiv ID | physics/0701288 |
| URL | https://arxiv.org/abs/physics/0701288 |
| DOI | 10.1063/1.2801714 |
Abstract
The longitudinal dynamics of a resonantly driven Langmuir wave are analyzed in the limit that the growth of the electrostatic wave is slow compared to the bounce frequency. Using simple physical arguments, the nonlinear distribution function is shown to be nearly gaussian in the canonical particle action, with a slowly evolving mean and fixed variance. Self-consistency with the electrostatic potential provide the basic properties of the nonlinear distribution function including a frequency shift that agrees well with driven, electrostatic particle simulations. This extends earlier work on nonlinear Langmuir waves by Morales and O'Neil [G. J. Morales and T. M. O'Neil, Phys. Rev. Lett. 28, 417 (1972)], and could form the basis of a reduced kinetic treatment of Raman backscatter in a plasma.
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"abstract": "The longitudinal dynamics of a resonantly driven Langmuir wave are analyzed\nin the limit that the growth of the electrostatic wave is slow compared to the\nbounce frequency. Using simple physical arguments, the nonlinear distribution\nfunction is shown to be nearly gaussian in the canonical particle action, with\na slowly evolving mean and fixed variance. Self-consistency with the\nelectrostatic potential provide the basic properties of the nonlinear\ndistribution function including a frequency shift that agrees well with driven,\nelectrostatic particle simulations. This extends earlier work on nonlinear\nLangmuir waves by Morales and O\u0027Neil [G. J. Morales and T. M. O\u0027Neil, Phys.\nRev. Lett. 28, 417 (1972)], and could form the basis of a reduced kinetic\ntreatment of Raman backscatter in a plasma.",
"arxiv_id": "physics/0701288",
"authors": [
"R. R. Lindberg",
"A. E. Charman",
"J. S. Wurtele"
],
"categories": [
"physics.plasm-ph"
],
"doi": "10.1063/1.2801714",
"title": "Self-consistent Langmuir waves in resonantly driven thermal plasmas",
"url": "https://arxiv.org/abs/physics/0701288"
},
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