Khrapak, Sergey und Huber, Peter und Thomas, Hubertus M. und Naumkin, Vadim und Molotkov, Vladimir und Lipaev, Andrey (2019) Theory of a cavity around a large floating sphere in complex (dusty) plasma. Physical Review E, 99, 053210. American Physical Society. doi: 10.1103/PhysRevE.99.053210. ISSN 2470-0045.
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Kurzfassung
In the last experiment with the PK-3 Plus laboratory onboard the International Space Station, interactions of millimeter-size metallic spheres with a complex plasma were studied [M. Schwabe et al., New J. Phys. 19, 103019 (2017)]. Among the phenomena observed was the formation of cavities (regions free of microparticles forming a complex plasma) surrounding the spheres. The size of the cavity is governed by the balance of forces experienced by the microparticles at the cavity edge. In this article we develop a detailed theoretical model describing the cavity size and demonstrate that it agrees well with sizes measured experimentally. The model is based on a simple practical expression for the ion drag force, which is constructed to take into account simultaneously the effects of nonlinear ion-particle coupling and ion-neutral collisions. The developed model can be useful for describing interactions between a massive body and surrounding complex plasma in a rather wide parameter regime.
elib-URL des Eintrags: | https://elib.dlr.de/129071/ | ||||||||||||||||||||||||||||
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Dokumentart: | Zeitschriftenbeitrag | ||||||||||||||||||||||||||||
Titel: | Theory of a cavity around a large floating sphere in complex (dusty) plasma | ||||||||||||||||||||||||||||
Autoren: |
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Datum: | 31 Mai 2019 | ||||||||||||||||||||||||||||
Erschienen in: | Physical Review E | ||||||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||||||
Open Access: | Ja | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Ja | ||||||||||||||||||||||||||||
In ISI Web of Science: | Ja | ||||||||||||||||||||||||||||
Band: | 99 | ||||||||||||||||||||||||||||
DOI: | 10.1103/PhysRevE.99.053210 | ||||||||||||||||||||||||||||
Seitenbereich: | 053210 | ||||||||||||||||||||||||||||
Verlag: | American Physical Society | ||||||||||||||||||||||||||||
ISSN: | 2470-0045 | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | complex (dusty) plasma, plasma-particle interactions, voids in complex plasmas, ion drag | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||
HGF - Programmthema: | Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R FR - Forschung unter Weltraumbedingungen | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Komplexe Plasmen / Theorie, Simulation (alt), R - Komplexe Plasmen / Schwerelosigkeit (alt) | ||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Institut für Materialphysik im Weltraum > Gruppe Komplexe Plasmen | ||||||||||||||||||||||||||||
Hinterlegt von: | Khrapak, Sergey | ||||||||||||||||||||||||||||
Hinterlegt am: | 11 Sep 2019 11:39 | ||||||||||||||||||||||||||||
Letzte Änderung: | 22 Nov 2023 06:35 |
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