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arXiv 2103.06532physics.plasm-ph
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超热等离子体中尘埃-离子-声波及其一阶和二阶无赖波的调制不稳定性

Modulational instability of dust-ion-acoustic waves and associated first and second-order rogue waves in super-thermal plasma

B. E. Sharmin, R. K. Shikha, N. K. Tamanna, N. A. Chowdhury, A. Mannan, A. A. Mamun

摘要:

对含有无惯性$κ$分布电子、惯性暖正离子和负尘埃颗粒的三分量尘埃等离子体系统中尘埃离子声波(DIAWs)的调制不稳定性(MI)条件进行了理论研究.利用约化微扰方法导出了新的非线性薛定谔方程(NLSE)。所考虑的分析演示了两种类型的模式,即快速和慢速DIA模式。等离子体介质的色散和非线性性质,以及MI条件的DIAWs和配置的充满活力的流氓波(RW)与DIAWs在调制不稳定的制度,已被严格改变的等离子体参数,即,电荷,质量,温度和数密度的等离子体物种。我们的研究结果将有助于理解在两种天体物理环境中形成静电RWS的标准(即,木星的磁层,彗星的尾巴,地球的中间层,土星的环,等等。和实验室实验(即,Q机和库仑晶体)。

英文摘要:

A proper theoretical research has been carried out to explore the modulational instability (MI) conditions of dust-ion-acoustic (DIA) waves (DIAWs) in a three-component dusty plasma system containing inertialess $κ$-distributed electrons, and inertial warm positive ions and negative dust grains. The novel nonlinear Schrödinger equation (NLSE) has been derived by employing the reductive perturbation method. The analysis under consideration demonstrates two types of modes, namely, fast and slow DIA modes. The dispersion and nonlinear properties of the plasma medium, as well as the MI conditions of DIAWs and the configuration of the energetic rogue waves (RWs) associated with DIAWs in the Modulationally unstable regime, have been rigorously changed by the plasma parameters, namely, charge, mass, temperature, and number density of the plasma species. The findings of our investigation will be useful in understanding the criteria for the formation of electrostatic RWs in both astrophysical environments (viz., Jupiter's magnetosphere, cometary tails, Earth's mesosphere, Saturn's rings, etc.) and laboratory experiments (viz., Q-machines and Coulomb-crystal).

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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