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首页> 外文期刊>Physica Scripta: An International Journal for Experimental and Theoretical Physics >Generation of wakefields and electromagnetic solitons in relativistic degenerate plasmas
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Generation of wakefields and electromagnetic solitons in relativistic degenerate plasmas

机译：在相对论退化等离子体中产生韦克菲尔德和电磁孤子

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摘要

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 equivalent to p(F)/mc 1 and v(g)/c similar to 1, 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 similar to 0.1, 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 less than or similar to 1) or strong relativistic degeneracy (R-0 > 1) with v(g)/c similar to 0.1, only the EM solitons can be formed.
机译：纵向电子密度扰动的强烈线性偏振电磁波（EMWS）的非线性相互作用在相对论的退化等离子体中重新检测。由EMW思考力驱动的EMWS和纵向场的非线性动力学由耦合的非线性偏微分方程控制。这些耦合方程的数值模拟表明，在弱相对论的退化等离子体中可以产生kekfields，其与p（f）/ mc 1和V（g）/ c类似于1的v（g）/ c，其中p（f ）是FERMI动量，M是电子的质量，C是真空中的光速，V（g）是肌肉群速度。然而，当比率V（g）/ c减少到类似于0.1时，抑制了Wakefield生成，而是将纵向区域置于局部化以形成孤子状结构。另一方面，在中等（R-0小于或类似的1）或具有V（g）/ c的强相的变性（R-0> 1）的方案中，类似于0.1，只能形成EM孤子。

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