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arXiv 1809.08600physics.plasm-ph
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双对等离子体中的静电无赖波

Electrostatic rogue waves in double pair plasmas

N. Ahmed, A. Mannan, N. A. Chowdhury, A. A. Mamun

摘要:

推导了一个非线性薛定谔方程,研究了含有绝热正、负离子流体和超热电子、正电子的双对等离子体系统中离子声波的调制不稳定性.分析预测了两种类型的模式,即快速($ω_f$)和慢速($ω_s$)IA模式。对于$ω_f$和$ω_s$,在外部扰动存在下,IAWs可能存在稳定和不稳定的参数区域。负离子和正电子的数密度在调制不稳定区产生IA流氓波(IARW)中起着至关重要的作用。指出了我们目前工作在天体物理环境[即地球电离层D区($\rm H^+, O_2^-$)和F区($\rm H^+, H^-$)]以及实验室等离子体[即对离子富勒烯($\rm C^+, C^-$)]中的应用。

英文摘要:

A nonlinear Schrödinger equation is derived to investigate the modulational instability (MI) of ion-acoustic (IA) waves (IAWs) in a double pair plasma system containing adiabatic positive and negative ion fluids along with super-thermal electrons and positrons. The analytical analysis predicts two types of modes, viz. fast ($ω_f$) and slow ($ω_s$) IA modes. The possible stable and unstable parametric regions for the IAWs in presence of external perturbation can be observed for both $ω_f$ and $ω_s$. The number density of the negative ions and positrons play a vital role in generating the IA rogue waves (IARWs) in the modulationally unstable region. The applications of our present work in astrophysical environments [viz. D-region ($\rm H^+, O_2^-$) and F-region ($\rm H^+, H^-$) of the Earth's ionosphere] as well as in laboratory plasmas [viz. pair-ion Fullerene ($\rm C^+, C^-$)] are pinpointed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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