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arXiv 1302.6429physics.plasm-ph
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光子在等离子体波中的动力学演化

Dynamical Evolution of Photons in Plasma Waves

Zhigang Bu, Yuee Luo, Hehe Li, Wenbo Chen, Peiyong Ji

摘要:

从粒子模型的观点出发,电磁辐射可以看作是由不同能量和动量的光子组成的系统,这为我们描述电磁波与等离子体的相互作用提供了一种不同于Maxwell波理论的方法。本文在光子动力学框架下统一描述了等离子体波中单光子的演化行为和光子系统的集体效应。在小振幅等离子体波中,等离子体波对光子动力学行为的调制可视为微扰,在线性理论中研究了光子加速效应和光子朗道阻尼。在任意振幅的等离子体波中,通过求解动力学方程,得到了光子在相空间和坐标空间中的演化轨迹,并讨论了光子在给定等离子体波中被俘获的条件和可能性。

英文摘要:

On the viewpoint of corpuscular model an electromagnetic radiation can be regarded as a system composed of photons with different energies and momenta, which provides us a method being different from the Maxwell wave theory to describe the interaction of electromagnetic waves with plasmas. In this paper the evolution behavior of a single photon and the collective effect of a photon system in plasma waves are uniformly described in the frame of photon dynamics. In a small-amplitude plasma wave the modulation of photon dynamical behavior by the plasma wave can be treated as perturbation, and the photon acceleration effect and photon Landau damping are investigated in the linear theory. In a plasma wave with arbitrary amplitude the photon evolution trajectories in phase space and coordinate space are obtained by solving the dynamical equations, and the trapping condition and possibility of photons in the given plasma wave are also discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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