论文标题
部分可观测时空混沌系统的无模型预测
Self-similar collapse in a circular magnetic field and electron beam jets by hybrid transverse plasmon
论文作者
论文摘要
基于描述高频场相互作用，自生磁场和离子声场相互作用的非线性耦合方程组，获得了圆形磁场的分散关系。数值结果表明，磁场的强度会影响调制不稳定性的生长速率。自相生的磁场具有自相似崩溃的趋势，这使电子沿轴向区域逸出并形成准直喷的喷气机。计算喷气机的速度，结果与实验观测一致。该研究可用于了解实验室和空间等离子体中电子束射流的动态过程。
Based on the set of nonlinear coupling equations describing the interaction of the high-frequency field, the self-generated magnetic field and the ion-acoustic field, the dispersion relation for the circular magnetic field is obtained. The numerical results indicate that the strength of the magnetic field have influence on the growth rate of modulation instability. The self-generated magnetic field has the tendency to self-similar collapse which makes the electron escapes along the axial region and form collimated jets. The velocity of jets is calculated and the results are consistent with experimental observations. The research may be applied to understand the dynamic process of electron beam jets in laboratory and space plasma.
