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arXiv 2103.01076physics.plasm-phphysics.data-anphysics.ins-detphysics.optics
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磁化等离子体的复干涉测量:精度和局限性

Complex interferometry of magnetized plasma: accuracy and limitations

Iu. Kochetkov, T. Pisarczyk, M. Kalal, T. Chodukowski, A. Zaras-Szydlowska, Z. Rusiniak, R. Dudzak, J. Dostal, M. Krupka, Ph. Korneev

摘要:

由高能激光辐射产生的膨胀激光等离子体具有高热和磁场能量密度。这种等离子体的表征是具有挑战性的,但需要了解其物理行为。在用于等离子体诊断的所有标准实验技术中,经典干涉测量法是最方便、信息量最大和最准确的方法之一。试图从每个单个激光发射中提取更多信息已经导致复杂干涉测量的发展,其在某些处理下允许仅使用一个数据对象来重建等离子体电子密度和磁场强度分布。然而,诊断的复杂性和普遍性的增加需要更详细的分析提取的值和它们的精度。本文从基本原理出发,追溯主要误差源,最后给出等离子体密度和磁场分布的一般分析,并给出误差条。使用合成配置文件使分析通用,虽然我们在附录中提出了一个真实的实验数据的例子。

英文摘要:

Expanding laser plasmas, produced by high energy laser radiation, possess both high thermal and magnetic field energy density. Characterization of such plasma is challenging but needed for understanding of its physical behaviour. Among all standard experimental techniques for plasma diagnostics, classical interferometry is one of the most convenient, informative and accurate. Attempts to extract more information from each single laser shot have led to development of complex interferometry, which under certain processing allows to reconstruct both plasma electron density and magnetic field strength distributions using just one data object. However, the increase in complexity and universality of the diagnostics requires a more detailed analysis of the extracted values and their accuracy.This work focuses on axisymmetric interaction geometry. We present general analysis, starting from the basic principles and trace main error sources, finally ending up with plasma density and magnetic field distributions with the derived error bars. Use of synthetic profiles makes the analysis universal, though we present an example with real experimental data in the Appendix.

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。

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