具有k分布电子和负离子的等离子体中任意振幅离子声双层

IF 1.3 Q3 ORTHOPEDICS
K. Kumar, M. K. Mishra
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引用次数: 2

摘要

本文讨论了过热电子和负离子浓度对具有kappa分布电子的热负离子和正离子组成的等离子体任意振幅离子声双层(ia - dl)的影响。利用伪势技术推导了离子声波的能量方程。我们研究了不同的参数制度,为存在的稀薄和压缩离子声dl。从最小马赫数和最大马赫数两方面计算了双层的存在性。详细讨论了谱指数k对Sagdeev电位振幅和深度的影响。数值分析发现,低α值下存在压缩双相层,高α值下存在稀薄双相层。另一方面,离子温度比(σ 1和σ 2)对双层的形成起着重要的作用。我们的分析工作还表明,该系统支持压缩和屈光光共存。质量比μ对DLs的基本性质也有影响。我们期望本结果可以用来解释空间等离子体中离子-声双层,其中两个离子种和超热电子被观察到NO52.35g。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Arbitrary amplitude ion acoustic double layer in plasma with k-distributed electrons and negative ions
In this paper we have discussed the consequence of superthermal electrons and negative ion concentration on the arbitrary amplitude ion-acoustic double layers (IA-DLs) for plasma comprising the hot negative and positive ions with kappa distribution electrons. The energy equation is deduced for ion acoustic waves using Pseudo potential technique. We have investigated different parametric regimes for the existence of rarefactive and compressive ion acoustic DLs. The existence of double layers in term of minimum and maximum Mach number has calculated numerically. The effect of spectral index k on the amplitude of DLs and depth of Sagdeev potential has been discussed in detail. From numerical analysis, it is found that the compressive DLs exist at low values of α and rarefactive double layer exist at higher values of α. On the other hand, the effect of ionic temperature ratio (σ 1 and σ 2) plays significant role for the formation of double layer. Our analytical work also shows that the system supports coexistence of compressive and rarefactive DLs. It is also observed that the mass ratio μ affect the basic properties of DLs. We expect that the present results may be used to explain the ion-acoustic double layer in space plasma, where two ionic species and superthermal electrons are observed NO52.35g.
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来源期刊
Plasma Research Express
Plasma Research Express Energy-Nuclear Energy and Engineering
CiteScore
2.60
自引率
0.00%
发文量
15
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