Ion-beam driven dust ion-acoustic solitary waves in dusty plasmas

Details Ion-beam driven dust ion-acoustic solitary waves in dusty plasmas Ion-beam driven dust ion-acoustic solitary waves in dusty plasmas

2010-03-31

arxiv.org/abs/1003.6038v2

Physics of Plasmas 17, 044502 (2010)

Physics

Plasma Physics

4 pages, 6 figures

Scientific paper

10.1063/1.3381036

The nonlinear propagation of small but finite amplitude dust ion-acoustic waves (DIAWs) in an ion-beam driven plasma with Boltzmannian electrons, positive ions and stationary charged dust grains, is studied by using the standard reductive perturbation technique (RPT). It is shown that there exist two critical values $(\gamma_{c1}$ and $\gamma_{c2})$ of ion-beam to ion phase speed ratio $(\gamma)$, beyond which the beam generated solitons are not possible. The effects of the parameters, namely $\gamma$, the ratio of the ion-beam to plasma ion density $(\mu_{i})$, the dust to ion density ratio $(\mu_{d})$ as well as the ion-beam to plasma ion mass ratio $(\mu)$ on both the amplitude and width of the stationary DIAWs are analyzed numerically, and applications of the results to laboratory ion-beam as well as space plasmas (e.g., auroral plasmas) are explained.

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