Calculations of nonlocal electron energy transport in laser produced plasmas in one and two dimensions using the velocity dependent Krook modela)
Calculations of nonlocal electron energy transport in laser produced plasmas in one and two dimensions using the velocity dependent Krook modela)
复制标题
使用速度相关的 Krook 模型在一维和二维中计算激光产生的等离子体中的非局域电子能量传输a)
DOI：
10.1063/1.4718458
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发表时间：
2012
影响因子：
2.2
通讯作者：
A. Schmitt
中科院分区：
文献类型：
--
作者：
W. Manheimer;D. Colombant;A. Schmitt
本文将NRL在过去4年中开发的速度相关Krook（VDK）模型扩展到二维，并提出了各种计算。本文提出的一维球面计算方法研究激波点火问题。将VDK计算与通量极限计算进行比较表明，激光轮廓必须重新调谐，并且由于燃料的预热而牺牲了一些增益。然而，预热绝不是激光聚变的障碍。对罗切斯特大学激光能量学实验室最近进行的箔片加速实验进行了二维模拟。径向损失在模拟翼型加速度时是非常重要的。一旦这样做，VDK模型给出了与实验的最佳一致性。
This paper extends the velocity dependent Krook (VDK) model, developed at NRL over the last 4 years, to two dimensions and presents a variety of calculations. One dimensional spherical calculations presented here investigate shock ignition. Comparing VDK calculations to a flux limit calculation shows that the laser profile has to be retuned and some gain is sacrificed due to preheat of the fuel. However, preheat is by no means a show stopper for laser fusion. The recent foil acceleration experiments at the University of Rochester Laboratory for Laser Energetics are modeled with two-dimensional simulations. The radial loss is very important to consider in modeling the foil acceleration. Once this is done, the VDK model gives the best agreement with the experiment.