Transport properties of the ionic component of dense plasmas are investigated on the basis of effective potentials taking into account the presence of an external alternating electrical (laser) field. The latter generates single-particle oscillations of electrons and significantly changes the screening of the test charge in plasma. Therefore, transport coefficients become non-monotonic function of the oscillation frequency. The results for the diffusion and viscosity coefficients are presented. These transport coefficients are computed using the generalized Coulomb logarithm within the Chapman-Enskog model for the fluid description. It was revealed that the oscillation of the electrons in the alternating external field with the frequency $\text{◂≳▸}\omega \gtrsim 2{\omega }_p$ (with ω_p being plasma frequency) results in the significant reduction of the ionic diffusion and viscosity coefficients. In contrast, at $\omega \lesssim {\omega }_p$, the ionic diffusion and viscosity coefficients are larger compared to the case without the external field impact.

中文翻译：

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研究单粒子振荡对致密等离子体传输特性的影响

考虑到外部交变电场（激光）场的存在，在有效电势的基础上研究了致密等离子体的离子成分的传输特性。后者产生电子的单粒子振荡并显着改变等离子体中测试电荷的筛选。因此，传输系数成为振荡频率的非单调函数。给出了扩散系数和粘度系数的结果。这些传输系数是使用 Chapman-Enskog 模型中的广义库仑对数计算的，用于流体描述。结果表明，电子在交变外场中的振荡频率为$\text{◂≳▸}\omega \gtrsim \mathrm{2个}{\omega }_p$（ω _p是等离子体频率）导致离子扩散和粘度系数显着降低。相反，在$\omega \lesssim {\omega }_p$，与没有外场影响的情况相比，离子扩散和粘度系数更大。