论文标题
相对论退化等离子体中的韦克菲尔德和电磁孤子产生
Generation of wakefields and electromagnetic solitons in relativistic degenerate plasmas
论文作者
论文摘要
在相对论的退化等离子体中重新审视了强烈的线性极化电磁波（EMW）与纵向电子密度扰动的非线性相互作用。 EMWS和纵向场的非线性动力学，由EMW蓬松力驱动，由一组耦合的非线性偏微分方程组成。对这些耦合方程式的数值模拟表明，韦克菲尔德的产生是在弱相对论的退化中的产生，$ r_0 \ equiv p_f/mc \ ll1 $和$ v_g/c/c \ sim1 $，其中$ p_f $是$ c $ c $ c $ c $ is em v speed and speed组速度。但是，当比率$ v_g/c $减少到$ \ sim0.1 $时，韦克菲尔德的生成被抑制，而是纵向场被定位以形成类似孤子的结构。另一方面，在中等$（R_0 \ Lessim1）$或强的相对论退化$（R_0> 1）$的款式中，$ v_g/c/c/c \ sim0.1 $，只能形成em solitons。
The nonlinear interaction of intense linearly polarized electromagnetic waves (EMWs) with longitudinal electron density perturbations is revisited in relativistic degenerate plasmas. The nonlinear dynamics of the EMWs and the longitudinal field, driven by the EMW ponderomotive force, is governed by a coupled set of nonlinear partial differential equations. A numerical simulation of these coupled equations reveals that the generation of wakefields is possible in weakly relativistic degenerate plasmas with $R_0\equiv p_F/mc\ll1$ and $v_g/c\sim1$, where $p_F$ is the Fermi momentum, $m$ is the mass of electrons, $c$ is the speed of light in vacuum, and $v_g$ is the EMW group velocity. However, when the ratio $v_g/c$ is reduced to $\sim0.1$, the wakefield generation is suppressed, instead the longitudinal fields get localized to form soliton-like structures. On the other hand, in the regimes of moderate $(R_0\lesssim1)$ or strong relativistic degeneracy $(R_0>1)$ with $v_g/c\sim0.1$, only the EM solitons can be formed.
