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Hydrodynamics of laser-produced plasma corona measured by optical interferometry

A Aliverdiev, D Batani, R Dezulian, T Vinci, A Benuzzi-Mounaix, M Koenig, V Malka2008年Plasma Physics and Controlled FusionIF 2.2出版社

We present the results of an experimental investigation of the temporal evolution of plasmas produced by high power laser irradiation of various types of target materials. We obtained 'high-quality' interferometric data on the evolution of the plasma electronic profile, which can be directly compared with analytical models and numerical simulations. For aluminium and plastic targets, the agreement with 1D simulations performed with the hydrocode MULTI is excellent, at least for large times (t ⩾ 400 ps). In this case, simulations also show that the effect of radiation transport is negligible. The situation is quite different for gold targets for which, in order to get a fair enough agreement, we must take radiation transport into account.

日本語訳

我々は、様々な種類のターゲット材料への高強度レーザー照射によって生成されたプラズマの時間的発展に関する実験的調査の結果を提示する。我々は、プラズマの電子密度分布の時間的発展に関する高品質な干渉計データを取得し、これは解析モデルおよび数値シミュレーションと直接比較することができる。アルミニウムおよびプラスチックターゲットについては、流体コードMULTIを用いて実施した1次元シミュレーションとの一致は、少なくとも大きな時間(t ⩾ 400 ps)において優れている。この場合、シミュレーションはまた、放射輸送の影響が無視できることを示している。金ターゲットについては状況がかなり異なり、十分な一致を得るためには放射輸送を考慮に入れる必要がある。

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Laser-produced plasma
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