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Dynamics and structural properties of dusty plasma liquid in microgravity: experiments onboard the International Space Station

V E Fortov, O S Vaulina, O F Petrov, V I Molotkov, A M Lipaev, G E Morfill, H Thomas, S A Khrapak, Yu P Semenov, A I Ivanov2004年Plasma Physics and Controlled FusionIF 2.2出版社

The results of numerical simulations of particles structure (ordering) and dynamics (diffusion constant) in a 'liquid plasma' state of strongly coupled dusty plasmas are considered. Static and dynamical properties of microparticle systems in the liquid state have been studied in experiments under microgravity conditions. The comparison of the experimental results with the results of numerical simulations of Debye systems was used to estimate the effective coupling parameter which governs particles structural and dynamical properties. This diagnostics tool allows one to estimate particle charge and plasma screening length which are very important characteristics of dusty plasmas.

日本語訳

強結合ダストプラズマの「液体」状態における粒子の構造(秩序)と動力学(拡散定数)の数値シミュレーションの結果を考察する。微小重力条件下での実験において、液体状態にある微粒子系の静的および動的性質が研究されてきた。実験結果とデバイ系の数値シミュレーション結果との比較は、粒子の構造的および動的性質を支配する有効結合パラメータを推定するために用いられた。この診断手法により、ダストプラズマの非常に重要な特性である粒子電荷とプラズマ遮蔽長を推定することが可能となる。

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Dusty plasma
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