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Interaction of a supersonic particle with a three-dimensional complex plasma

Zaehringer, Erich and Schwabe, Mierk and Zhdanov, Sergey and Mohr, Daniel P. and Knapek, Christina and Huber, Peter and Semenov, Igor and Thomas, Hubertus M. (2018) Interaction of a supersonic particle with a three-dimensional complex plasma. 15th Dusty Plasma Workshop, 2018-05-29 - 2018-06-01, Baltimore, Maryland, USA.

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The Ekoplasma setup is developed as next generation plasma chamber for future investigation of complex plasmas on the International Space Station. In this contribution the setup is used during the 29th DLR parabolic flight campaign to study the influence of a supersonic projectile on a three-dimensional complex plasma. Micron sized particles formed a large undisturbed system in the “Zyflex” chamber during microgravity conditions. A Mach cone with a double Mach cone structure was excited by a supersonic probe particle with Mach number M≈1.5−2 in the large weakly damped particle cloud. The sound speed is measured with different methods and particle charge estimations are compared to the calculations from standard theories. High image resolution enabled the study of the Mach cone on the single particle level and gives insight to the dynamics. We discovered a heating of the microparticles behind the supersonic projectile but not in the flanks of the Mach cone. The heating is connected to different waves of the double Mach cone structure.

Item URL in elib:https://elib.dlr.de/121318/
Document Type:Conference or Workshop Item (Speech)
Title:Interaction of a supersonic particle with a three-dimensional complex plasma
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Zaehringer, ErichUNSPECIFIEDhttps://orcid.org/0000-0003-4718-5447UNSPECIFIED
Schwabe, MierkUNSPECIFIEDhttps://orcid.org/0000-0001-6565-5890UNSPECIFIED
Mohr, Daniel P.UNSPECIFIEDhttps://orcid.org/0000-0002-9382-6586UNSPECIFIED
Knapek, ChristinaUNSPECIFIEDhttps://orcid.org/0000-0001-7105-627XUNSPECIFIED
Thomas, Hubertus M.UNSPECIFIEDhttps://orcid.org/0000-0001-8358-2023UNSPECIFIED
Date:1 June 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Sound waves, Dusty Plasma, Ekoplasma
Event Title:15th Dusty Plasma Workshop
Event Location:Baltimore, Maryland, USA
Event Type:international Conference
Event Start Date:29 May 2018
Event End Date:1 June 2018
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Research under Space Conditions
DLR - Research area:Raumfahrt
DLR - Program:R FR - Research under Space Conditions
DLR - Research theme (Project):R - Materials Research and Microgravity (MuM), R - Komplexe Plasmen / Zero gravity (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Zaehringer, Erich
Deposited On:13 Aug 2018 08:18
Last Modified:24 Apr 2024 20:25

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