The soliton waves are one of the nonlinear phenomena which can propagate in the different types of plasma such as multiple particles of plasma, nonthermal plasma, and space plasma. Using the Sagdeev potential technique, the stability conditions of the soliton waves in the nonthermal plasma have been theoretically studied. One of the significant factors that can affect the propagation of the soliton waves is the distribution function such as nonMaxwellian distribution function or Kappa distribution function. In this paper, we try to investigate the soliton wave in the unmagnetized multi-component plasma consisting of the nonthermal electron and the nonthermal ion, positron and dust with Kappa distribution function. Then by using the Sagdeev potential, the nonlinear equation for the potential is obtained and then the compression and rarefaction soliton waves are computed with the numerical method for this nonlinear wave. Finally, by imposing the Sagdeev potential condition, we discuss the stability of these soliton waves.

中文翻译：

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具有离子和超热电子的多组分致密等离子体，具有 kappa 分布

孤子波是一种非线性现象，可以在不同类型的等离子体中传播，例如多粒子等离子体、非热等离子体和空间等离子体。采用Sagdeev势技术，理论研究了孤子波在非热等离子体中的稳定性条件。影响孤子波传播的重要因素之一是分布函数，例如非麦克斯韦分布函数或 Kappa 分布函数。在本文中，我们试图研究由非热电子和非热离子、正电子和尘埃组成的未磁化多组分等离子体中的孤子波，并具有Kappa分布函数。然后通过使用 Sagdeev 势，得到了势的非线性方程，然后用数值方法计算了该非线性波的压缩和稀疏孤子波。最后，通过施加 Sagdeev 势条件，我们讨论了这些孤子波的稳定性。