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Effect of expanding plasma on propagation of electromagnetic pulses by laser-plasma interaction

J Krása, F Consoli, J Cikhardt, M Pfeifer, R De Angelis, M Krupka, D Klír, K Řezáč, J Dostál, M Krůs2020年Plasma Physics and Controlled FusionIF 2.2出版社

Experiments were performed using the Prague Asterix Laser System to study the effect of expanding plasma on electromagnetic pulse propagation (EMP) in the interaction chamber in an intensity regime of 1016 W cm−2. Similar to the interaction that occurs between radio waves and the ionosphere, the expansion of laser-produced plasma causes the vacuum chamber to be gradually filled with inhomogeneous plasma that interacts with the emitted EMP. Combining the space-time analysis of a plasma density inside the interaction chamber and the fast Fourier transform filtering of antenna signals, we have resolved the influence of the expanding plasma on space-time characteristics of EMP.

日本語訳

実験は、プラハ・アステリックス・レーザーシステムを用いて、10¹⁶ W cm⁻²の強度領域における相互作用チャンバー内での電磁パルス伝播(EMP)に対する膨張プラズマの影響を研究するために実施された。電波と電離層との間で生じる相互作用と同様に、レーザー生成プラズマの膨張により、真空チャンバーは徐々に不均一なプラズマで満たされ、それが放出されたEMPと相互作用する。相互作用チャンバー内のプラズマ密度の時空間解析とアンテナ信号の高速フーリエ変換フィルタリングを組み合わせることで、膨張プラズマがEMPの時空間特性に及ぼす影響を解明した。

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Laser plasmaLaser-plasma interaction
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