arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1606.06276physics.plasm-ph
收藏

惯性约束聚变内爆种间离子分离的观测

Observation of interspecies ion separation in inertial-confinement-fusion implosions

S. C. Hsu, T. R. Joshi, P. Hakel, E. L. Vold, M. J. Schmitt, N. M. Hoffman, R. M. Rauenzahn, G. Kagan, X. -Z. Tang, R. C. Mancini, Y. Kim, H. W. Herrmann

摘要:

我们报告的直接实验证据,种间离子分离的直接驱动,惯性约束聚变实验的欧米茄激光设备。这些实验使用具有D $_2$ /Ar气体填充物(按原子计1% Ar)的塑料胶囊,具体设计为通过利用大质量和电荷差异的离子种类之间的预测的强离子热扩散来揭示种类间离子分离。通过对成像X射线光谱数据的详细分析,我们提取了不同时间的Ar原子分数径向分布,并观察到与初始1% Ar气体填充相比的增强和耗尽。实验结果解释与辐射流体动力学模拟,包括最近实施的,种间离子扩散的第一性原理模型。实验推断的Ar原子分数的配置文件同意合理,但不完全,与计算的配置文件与传入和反弹的第一冲击。

英文摘要:

We report direct experimental evidence of interspecies ion separation in direct-drive, inertial-confinement-fusion experiments on the OMEGA laser facility. These experiments, which used plastic capsules with D$_2$/Ar gas fill (1% Ar by atom), were designed specifically to reveal interspecies ion separation by exploiting the predicted, strong ion thermo-diffusion between ion species of large mass and charge difference. Via detailed analyses of imaging x-ray-spectroscopy data, we extract Ar-atom-fraction radial profiles at different times, and observe both enhancement and depletion compared to the initial 1%-Ar gas fill. The experimental results are interpreted with radiation-hydrodynamic simulations that include recently implemented, first-principles models of interspecies ion diffusion. The experimentally inferred Ar-atom-fraction profiles agree reasonably, but not exactly, with calculated profiles associated with the incoming and rebounding first shock.

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。

↑