Simulation and mitigation of the magneto-Rayleigh-Taylor instabilities in Z-pinch gas discharge extreme ultraviolet plasma radiation sources
Simulation and mitigation of the magneto-Rayleigh-Taylor instabilities in Z-pinch gas discharge extreme ultraviolet plasma radiation sources
复制标题
DOI：
10.1063/1.4835275
复制
发表时间：
2013-11
影响因子：
2.2
通讯作者：
Bin Huang;T. Tomizuka;B. Xie;Y. Sakai;Q. Zhu;I. Song;A. Okino;F. Xiao;Masato Watanabe;E. Hotta
中科院分区：
文献类型：
--
作者：
Bin Huang;T. Tomizuka;B. Xie;Y. Sakai;Q. Zhu;I. Song;A. Okino;F. Xiao;Masato Watanabe;E. Hotta
开发和使用的单流体两个温度近似的2-D磁流体动力学代码的报告。利用该程序研究了气体射流型极紫外（EUV）光源中的Z箍缩动力学和磁瑞利泰勒（MRT）不稳定性的演化。详细讨论了Z箍缩动力学的内爆和停滞过程以及初始扰动（单模、多模和随机种子）对MRT不稳定性的影响。在单模种子的情况下，模拟表明，毫米级波长到4毫米的增长率在0.05和0.065 ns-1之间。对于多模种子，模式耦合效应导致一系列其他谐波，并复杂的MRT不稳定性的演变。对于随机种子的扰动，模式演变到更长的波长，并最终收敛到一个毫米级的波长约1毫米。MRT不稳定性也可以改变捏滞状态，并导致温度和密度的波动沿着Z轴，这是一个很好的解决方案。
The development and use of a single-fluid two-temperature approximated 2-D Magneto-Hydrodynamics code is reported. Z-pinch dynamics and the evolution of Magneto-Rayleigh-Taylor (MRT) instabilities in a gas jet type Extreme Ultraviolet (EUV) source are investigated with this code. The implosion and stagnation processes of the Z-pinch dynamics and the influence of initial perturbations (single mode, multi- mode, and random seeds) on MRT instability are discussed in detail. In the case of single mode seeds, the simulation shows that the growth rates for mm-scale wavelengths up to 4 mm are between 0.05 and 0.065 ns−1. For multi-mode seeds, the mode coupling effect leads to a series of other harmonics, and complicates MRT instability evolution. For perturbation by random seeds, the modes evolve to longer wavelengths and finally converge to a mm-scale wavelength approximately 1 mm. MRT instabilities can also alter the pinch stagnation state and lead to temperature and density fluctuations along the Z axis, whic...