Kinetic measurements of shock wave propagation in a three-dimensional complex (dusty) plasma.

Autor: Samsonov D; Centre for Interdisciplinary Plasma Science, Max-Planck-Institut für Extraterrestrische Physik, D-85740 Garching, Germany., Morfill G, Thomas H, Hagl T, Rothermel H, Fortov V, Lipaev A, Molotkov V, Nefedov A, Petrov O, Ivanov A, Krikalev S
Jazyk: angličtina
Zdroj: Physical review. E, Statistical, nonlinear, and soft matter physics [Phys Rev E Stat Nonlin Soft Matter Phys] 2003 Mar; Vol. 67 (3 Pt 2), pp. 036404. Date of Electronic Publication: 2003 Mar 14.
DOI: 10.1103/PhysRevE.67.036404
Abstrakt: "Complex plasmas" consist of electrons, ions, and charged microparticles. The latter are individually observable, allowing kinetic measurements in plasmas. Using a sudden gas pulse, a traveling perturbation was initiated in such a complex plasma and its propagation, acceleration, and steepening-possibly into a shock was followed. The experiment was performed in the PKE-Nefedov laboratory under microgravity conditions on the international space station, i.e., in a complex plasma cloud with very little stored (potential or free) energy and thus free of, e.g., parametric instabilities. The perturbation front remained remarkably smooth, with a microroughness of the order of the interparticle distance. The observations are presented and interpreted.
Databáze: MEDLINE