非局域能量输运的解析洞察：任意Z等离子体中的稳态Fokker-Planck理论
Analytic insights into nonlocal energy transport: Steady State Fokker Planck theory in arbitrary Z plasmas
AI总结：
本文针对任意Z等离子体建立稳态Fokker-Planck理论，提出稀疏本征函数分析方法，使非局域能量输运模型可纳入辐射流体力学模拟，并通过Rochester/NIF塑料球形靶实验验证了方法的有效性。
摘要：
激光聚变中高能电子的产生是一个重要问题。这些电子可能来源于激光等离子体不稳定性，也可能来自麦克斯韦分布中未耦合的高温尾部。为了在激光聚变背景下研究这些问题，找到一种既足够精确又有用、又足够简单以便纳入辐射流体力学数值模拟（研究激光聚变靶的主要工具）的方法至关重要。这正是解析洞察变得重要的原因，它们使人们能够简化Fokker-Planck理论，从而将其解纳入辐射流体力学（rad-hydro）模拟中。本工作建立并分析了适用于任意Z等离子体的稳态Fokker-Planck理论。它发展了一种利用稀疏本征函数分析技术求解简化Fokker-Planck方程的方法。与Rochester/NIF上带硅层和不带硅层的塑料球形靶的实验结果相比，该方法表现出相当好的吻合度。
英文摘要：
The generation of energetic electrons in laser fusion in an important issue. The electrons may either arise from a laser plasma instability, or from the uncoupled high temperature tail of a Maxwellian distribution. To study these in a laser fusion context, it is important to find a method accurate enough to be useful, and simple enough to be incorporated into a radiation hydrodynamics numerical simulation, the main workhorse for studying the laser fusion target. That is why analytic insights become important, they allow one to simplify the Fokker Planck theory so that a solution of it can be incorporated into a radiation hydrodynamic (rad-hydro) simulation. This work develops and analyzes a steady state Fokker Planck theory for plasmas of arbitrary Z. It developes a method of solving the simplified Fokker Planck method with a technique called sparse eigenfunction analysis. This method appears to work reasonably well when compared to the experimental results from the Rochester/NIF on plastic spherical targets with and without a silicon layer.
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