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arXiv 1906.08883physics.plasm-ph
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原子动力学对逆韧致辐射加热和非局域热输运的影响

Influence of atomic kinetics on inverse Bremsstrahlung heating and non-local thermal transport

H. P. Le, M. Sherlock, H. A. Scott

摘要:

本文描述了一个计算模型,自洽地结合在一个单一的框架中的动力学电子和原子过程的物理。该公式由自由电子的动力学Vlasov-Boltzmann-Fokker-Planck方程和原子态布居的非麦克斯韦碰撞辐射模型组成。我们利用这个模型来研究原子动力学对逆韧致辐射加热和非局域热输运的影响。我们表明,原子动力学影响非线性IB吸收率,通过进一步修改电子分布,除了激光加热。我们还表明,非本地热流的准确建模需要一个自洽的处理原子动力学,因为有效的热导率强烈依赖于等离子体的电离平衡。

英文摘要:

This paper describes a computational model that self-consistently combines physics of kinetic electrons and atomic processes in a single framework. The formulation consists of a kinetic Vlasov- Boltzmann-Fokker-Planck equation for free electrons and a non-Maxwellian collisional-radiative model for atomic state populations. We utilize this model to examine the influence of atomic kinetics on inverse Bremsstrahlung (IB) heating and non-local thermal transport. We show that atomic kinetics affects non-linear IB absorption rates by further modifying the electron distribution in addition to laser heating. We also show that accurate modeling of non-local heat flow requires a self-consistent treatment of atomic kinetics, because the effective thermal conductivity strongly depends on the ionization balance of the plasma.

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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