Head-on collision of electron acoustic solitary waves in a plasma with nonextensive hot electrons
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- 作者：Parvin Eslami (1)
Marzieh Mottaghizadeh (2)
Hamid Reza Pakzad (3) pakzad@bojnourdiau.ac.ir - 关键词：Electron ; acoustic solitary waves – ; E– ; i plasma – ; Korteweg– ; de Vries equation – ; Nonextensive electrons – ; Head ; on collision – ; Phase shifts
- 刊名：Astrophysics and Space Science
- 出版时间：April 2012
- 出版年：2012
- 期刊代码：8_0004640X
- 类别：mat
- 卷：338
- 期：2
- 页码：271-278
- 数据来源：sp
摘要
The head-on collision between two electron-acoustic solitary waves (EASWs) in an unmagnetized plasma is investigated, including a cold electrons fluid, hot electrons, obeying a nonextensive distribution and stationary ions. By using the extended Poincar茅-Lighthill–Kuo (PLK) perturbation method, the analytical phase shifts following the head-on collision are derived. The effects of the ratio of the number density of hot electrons to the number density of cold electrons α, and the nonextensive parameter q on the phase shifts are studied. It is found that q and the hot-to-cold electron density ratio significantly modify the phase shifts.