期刊
PHYSICS LETTERS A
卷 377, 期 34-36, 页码 2097-2104出版社
ELSEVIER
DOI: 10.1016/j.physleta.2013.06.008
关键词
Electron acoustic plasma; Solitary wave; Rogue wave; Nonlinear Schrodinger equation
资金
- Scientific Research Fund of Zhejiang Provincial Education Department [Y201225803]
- Scientific Research and Development Fund of Zhejiang AF University [2012FK002]
- National Natural Science Foundation of China [11072219, 11005092, 61205006]
- Zhejiang Provincial Natural Science Foundation of China [Y13F050037]
In this Letter, we discuss the electron acoustic (EA) waves in plasmas, which consist of nonthermal hot electrons featuring the Tsallis distribution, and obtain the corresponding governing equation, that is, a nonlinear Schrodinger (NLS) equation. By means of Modulation Instability (MI) analysis of the EA waves, it is found that both electron acoustic solitary wave and rogue wave can exist in such plasmas. Basing on the Darboux transformation method, we derive the analytical expressions of nonlinear solutions of NLS equations, such as single/double solitary wave solutions and single/double rogue wave solutions. The existential regions and amplitude of solitary wave solutions and the rogue wave solutions are influenced by the nonextensive parameter q and nonthermal parameter alpha. Moreover, the interaction of solitary wave and how to postpone the excitation of rogue wave are also studied. (C) 2013 Elsevier B.V. All rights reserved.
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