Impulse coupling measurement of metallic and carbon targets during laser ablation through ballistic pendulum experiments and simulations

C. Le Bras, L. Berthe, L. Videau, S. Baton, M. Boustie, S. Boyer, C. Rousseaux, E. Brambrink, J M Chevalier, J. Houy, B. Aubert, B. Jodar, D. Loison, D. Hébert
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Abstract

Laser ablation propulsion and orbit cleaning are developing areas of research. The general aim of laser-based techniques applied to this field is to maximize the momentum transfer produced by a laser shot. This work presents results from ballistic pendulum experiments under vacuum on aluminum, copper, tin, gold, and porous graphite targets. The work has focused on the metrology of the laser experiments to ensure good stability over a wide range of laser parameters (laser intensity ranging from 4 GW/cm2 to 8.7 TW/cm2, pulse duration from 80 ps to 15 ns, and wavelengths of 528 or 1057 nm). The results presented compile data from three experimental campaigns spanning from 2018 to 2021 on two different laser platforms and using different pulse durations, energies, and wavelengths. The study is complemented by the simulation of the momentum from the mono-dimensional Lagrangian code ESTHER. The first part of this work gives a detailed description of the experimental setup used, the ESTHER code, and the treatment of the simulations. The second part focuses on the experimental results. The third part describes the simulation results and provides a comparison with the experimental data. The last part presents possible improvements for future work on the subject.
通过弹道摆实验和模拟,测量激光烧蚀过程中金属和碳靶的脉冲耦合度
激光烧蚀推进和轨道清洁是正在发展的研究领域。应用于这一领域的激光技术的总体目标是最大限度地提高激光发射产生的动量传递。这项工作展示了在真空条件下对铝、铜、锡、金和多孔石墨目标进行弹道摆锤实验的结果。工作重点是激光实验的计量,以确保在广泛的激光参数(激光强度从 4 GW/cm2 到 8.7 TW/cm2,脉冲持续时间从 80 ps 到 15 ns,波长为 528 或 1057 nm)范围内保持良好的稳定性。研究结果汇编了从 2018 年到 2021 年在两个不同激光平台上进行的三次实验活动的数据,并使用了不同的脉冲持续时间、能量和波长。这项研究得到了单维拉格朗日代码ESTHER的动量模拟的补充。本研究的第一部分详细介绍了所使用的实验装置、ESTHER 代码和模拟处理方法。第二部分侧重于实验结果。第三部分介绍了模拟结果,并与实验数据进行了比较。最后一部分介绍了今后在这一课题上可能进行的改进。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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