论文标题
离子声学孤立波通过电子离子等离子体和负离子等离子体之间的边界
Passage of an ion-acoustic solitary wave through the boundary between an electron-ion plasma and a negative ion plasma
论文作者
论文摘要
考虑了离子声学孤立波穿过电子血浆和负离子等离子体之间的边界的通道。离子声学孤立波进入另一个血浆的区域后，会产生干扰，随着时间的推移，离子声音孤立波和一系列振荡形成。通过边界变化后，离子声音孤立波的幅度以某种方式变化，即其在电子离子等离子体中的值大于其在负离子等离子体中的值。一个例外是通过负离子等离子体传播压缩离子声音孤立波，并且具有超过电子等离子体中临界幅度的振幅。这种离子声音孤立波在进入电子离子等离子体时会释放出过量的能量以加速正离子，从而将其振幅降低到临界值以下。确定边界交叉对其初始幅度后建立的离子声学孤立波的振幅的依赖性。考虑了一个由电子离子等离子体包围的负离子等离子体层的离子声学孤立波的通过。结果表明，稀有离子声音孤立波从负离子等离子体进入电子离子等离子体会引起干扰，其中可以观察到加速和被困的负离子。
The passage of an ion-acoustic solitary wave through the boundary between an electron-ion plasma and a negative ion plasma is considered. After the ion-acoustic solitary wave enters the region of another plasma, a disturbance arises, from which an ion-acoustic solitary wave and a chain of oscillations form over time. The amplitude of the ion-acoustic solitary wave after passage through the boundary changes in such a way that its value in the electron-ion plasma is greater than its value in the negative ion plasmas. An exception is the case of a compressive ion-acoustic solitary wave propagating through the negative ion plasma and having an amplitude exceeding the critical amplitude in the electron-ion plasma. Such an ion-acoustic solitary wave, when entering an electron-ion plasma, releases an excess of energy to accelerate positive ions and thereby reduces its amplitude below the critical value. The dependence of the amplitude of an ion-acoustic solitary wave established after the boundary crossing on its initial amplitude is determined. The passage of an ion-acoustic solitary wave through a layer of negative ion plasma surrounded by electron-ion plasmas is considered. It is shown that the passage of a rarefactive ion-acoustic solitary wave from the negative ion plasma into the electron-ion plasma causes disturbance, in which accelerated and trapped negative ions can be observed.
