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Eigenfrequencies of Ion-Acoustic Waves in the Presence of Electron-Ion Collisions
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| ZHEHG Jian;YU Chang-Xuan |
| Department of Modern Physics, University of Science and Technology of China, Hefei 230027 |
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| Cite this article: |
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ZHEHG Jian, YU Chang-Xuan 2000 Chin. Phys. Lett. 17 680-682 |
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Abstract Frequencies and damping rate of ion-acoustic waves in the presence of electron-ion collisions are computed by reducing the linearized electron Fokker-Planck equation and cold-ion fluid equations to an eigenvalue equation via moment expansion of the perturbation of electron distribution function. As electrons becomes less collisional, a great number of Sonine modes are needed for convergence to a desired accuracy in the calculation, which may be ascribed to the neglected electron-electron collisions.
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| Keywords:
52.35.Fp
52.25.Dg
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Published: 01 September 2000
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| PACS: |
52.35.Fp
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(Electrostatic waves and oscillations (e.g., ion-acoustic waves))
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52.25.Dg
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(Plasma kinetic equations)
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