Spectroscopic determination of dynamic plasma gradients in implosion cores.
Spectroscopic determination of dynamic plasma gradients in implosion cores.
复制标题
DOI：
10.1103/physrevlett.88.045002
复制
发表时间：
2002-01
影响因子：
8.6
通讯作者：
I. Golovkin;R. Mancini;S. Louis;Y. Ochi;K. Fujita;H. Nishimura;H. Shirga;N. Miyanaga;H. Azechi;R. Butzbach;I. Uschmann;E. Förster;J. Delettrez;J. Koch;R. Lee;L. Klein
中科院分区：
文献类型：
--
作者：
I. Golovkin;R. Mancini;S. Louis;Y. Ochi;K. Fujita;H. Nishimura;H. Shirga;N. Miyanaga;H. Azechi;R. Butzbach;I. Uschmann;E. Förster;J. Delettrez;J. Koch;R. Lee;L. Klein
使用基于时间分辨 X 射线单色图像和掺 Ar D2 内爆核心的 X 射线线谱同步分析的方法，确定了激光压缩、高能量密度等离子体的时间相关梯度结构。该分析自洽地确定了最适合空间发射率分布和谱线形状的温度和密度梯度。这种测量对于理解与内爆过程相关的光谱形成和等离子体动力学非常重要。此外，由于结果与流体动力学模拟无关，因此它们对于与流体动力学模型进行比较也很重要。
The time-dependent gradient structure of a laser-compressed, high-energy-density plasma has been determined using a method based on the simultaneous analysis of time-resolved x-ray monochromatic images and x-ray line spectra from Ar-doped D2 implosion cores. The analysis self-consistently determines the temperature and density gradients that yield the best fits to the spatial-emissivity profiles and spectral line shapes. This measurement is important for understanding the spectra formation and plasma dynamics associated with the implosion process. In addition, since the results are independent of hydrodynamic simulations, they are also important for comparison with fluid-dynamic models.