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arXiv physics/0606108physics.plasm-ph
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非相对论非平衡等离子体的电动力学

Electrodynamics of a non-relativistic, non-equilibrium plasma

Shirish M. Chitanvis

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摘要：

用经典电动场论研究了非平衡等离子体。非线性相互作用项对修饰电动力场的有限寿命有贡献。寿命表现出$\sim n^{-1} T_{e}^{3/2} T_{i}^{-2}T_{r}^{1/2}$依赖性，其中$n$是数密度，$T_{e}$是电子温度，$T_{i}$是离子温度，以及$T_{r}$是辐射场的温度。所得到的等离子体共振的宽度被示出为随着接近平衡而减小。对于低能电磁辐射，动态屏蔽导致等离子体不透明。这导致了对四次Stefan-Boltzmann定律的二次修正。我们还简要讨论了动态筛选对融合率的影响。我们的非线性波动方程的孤子解允许正电荷的本地化，这可能会提高融合率。

英文摘要：

A non-equilibrium plasma was studied using classical electrodynamic field theory. Non-linear interaction terms contribute to a finite lifetime for the dressed electrodynamic field. The lifetime exhibits a $\sim n^{-1} T_{e}^{3/2} T_{i}^{-2}T_{r}^{1/2}$ dependence, where $n$ is the number density, $T_{e}$ is the electron temperature, $T_{i}$ is the ion temperature, and $T_{r}$ is the temperature of the radiation field. The resulting width of the plasmon resonance is shown to decrease as equilibrium is approached. Dynamic screening leads to opaqueness of the plasma for low energy electromagnetic radiation. This leads to a quadratic correction to the quartic Stefan-Boltzmann law. We also briefly discuss the effect of dynamic screening on fusion rates. Solitonic solutions to our non-linear wave equation allow localization of positive charges, which may enhance fusion rates.

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