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引用次数: 0
摘要
研究了在具有漂移电子的等离子体中表现出各种轨道角动量（OAM）状态的离子声（IA）模式。等离子体的组成物质采用非熵麦克斯韦分布建模，并讨论了各种条件下扭曲 IA 波的弥散关系和增长率。在动力学模型领域，扭曲 IA 波以拉盖尔-高斯（LG）解为特征，等离子体分布函数和电场被分解为轴向和方位角分量。等离子体响应函数是在准轴向近似条件下获得的，并研究了螺旋电场结构的不稳定增长率阈值条件。通过比较单电子和双电子的扭曲波，证明了额外电子对不稳定性的影响。
The ion-acoustic (IA) mode exhibiting various orbital angular momentum (OAM) states is examined in a plasma with drifting electrons. The constituent plasma species are modeled with a non-gyrotropic Maxwellian distribution and discussion of dispersion relation and growth rate of twisted IA waves under various conditions is presented. In the domain of kinetic model, the twisted IA waves are characterized by Laguerre-Gaussian (LG) solutions, where plasma distribution function and electric field are decomposed into axial and azimuthal components. The plasma response function is obtained under paraxial approximations and investigated for threshold condition of instability growth rate with helical electric field structures. The impact of an extra electron specie on the instability is demonstrated through a comparison of twisted waves for single and double electron species.
期刊介绍：
Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance.
Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.
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