### Abstract

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

Pages | 4057-4061 |

Number of pages | 4 |

Journal | Physics Letters A |

Volume | 372 |

Issue number | 22 |

DOIs | |

Publication status | Published - 26 May 2008 |

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### Keywords

- warm multicomponent plasma
- solitons
- generation
- beam

### Cite this

*Physics Letters A*,

*372*(22), 4057-4061. https://doi.org/10.1016/j.physleta.2008.02.086

}

*Physics Letters A*, vol. 372, no. 22, pp. 4057-4061. https://doi.org/10.1016/j.physleta.2008.02.086

**Ion-acoustic solitary waves in a dense pair-ion plasma containing degenerate electrons and positrons.** / Abdelsalam, U.M.; Moslem, W.M.; Shukla, P.K.

Research output: Contribution to journal › Article

TY - JOUR

T1 - Ion-acoustic solitary waves in a dense pair-ion plasma containing degenerate electrons and positrons

AU - Abdelsalam, U.M.

AU - Moslem, W.M.

AU - Shukla, P.K.

PY - 2008/5/26

Y1 - 2008/5/26

N2 - Fully nonlinear propagation of ion-acoustic solitary waves in a collisionless dense/quantum electron-positron-ion plasma is investigated. The electrons and positrons are assumed to follow the Thomas-Fermi density distribution and the ions are described by the hydrodynamic equations. An energy balance-like equation involving a Sagdeev-type pseudo-potential is derived. Finite amplitude solutions are obtained numerically and their characteristics are discussed. The small-but finite-amplitude limit is also considered and an exact analytical solution is obtained. The present studies might be helpful to understand the excitation of nonlinear ion-acoustic solitary waves in a degenerate plasma such as in superdense white dwarfs.

AB - Fully nonlinear propagation of ion-acoustic solitary waves in a collisionless dense/quantum electron-positron-ion plasma is investigated. The electrons and positrons are assumed to follow the Thomas-Fermi density distribution and the ions are described by the hydrodynamic equations. An energy balance-like equation involving a Sagdeev-type pseudo-potential is derived. Finite amplitude solutions are obtained numerically and their characteristics are discussed. The small-but finite-amplitude limit is also considered and an exact analytical solution is obtained. The present studies might be helpful to understand the excitation of nonlinear ion-acoustic solitary waves in a degenerate plasma such as in superdense white dwarfs.

KW - warm multicomponent plasma

KW - solitons

KW - generation

KW - beam

UR - http://dx.doi.org/10.1016/j.physleta.2008.02.086

U2 - 10.1016/j.physleta.2008.02.086

DO - 10.1016/j.physleta.2008.02.086

M3 - Article

VL - 372

SP - 4057

EP - 4061

JO - Physics Letters A

T2 - Physics Letters A

JF - Physics Letters A

SN - 0375-9601

IS - 22

ER -