elib
DLR-Header
DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Excitation of nonlinear wave patterns in flowing complex plasmas

Jaiswal, Surabhi and Bandyopadhyay, P. and Sen, A. (2018) Excitation of nonlinear wave patterns in flowing complex plasmas. DIVERSE WORLD OF DUSTY PLASMAS: Proceedings of the 8th International Conference on the Physics of Dusty Plasmas, 1925 (020015). AIP. ISBN 978-0-7354-1617-8.

[img] PDF - Registered users only
641kB

Abstract

We describe experimental observations of nonlinear wave structures excited by a supersonic mass flow of dust particles over an electrostatic potential hill in a dusty plasma medium. The experiments have been carried out in a Π− shaped experimental (DPEx) device in which micron sized Kaolin particles are embedded in a DC glow discharge Argon plasma. An equilibrium dust cloud is formed by maintaining the pumping speed and gas flow rate and the dust flow is induced either by suddenly reducing the height of a potential hill or by suddenly reducing the gas flow rate. For a supersonic flow of the dust fluid precursor solitons are seen to propagate in the upstream direction while wake structures propagate in the downstream direction. For flow speeds with a Mach number greater than 2 the dust particles flowing over the potential hill give rise to dispersive dust acoustic shock waves. The experimental results compare favorably with model theories based on forced K-dV and K-dV Burger’s equations.

Item URL in elib:https://elib.dlr.de/119094/
Document Type:Proceedings
Title:Excitation of nonlinear wave patterns in flowing complex plasmas
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jaiswal, SurabhiSurabhi.Jaiswal (at) dlr.deUNSPECIFIED
Bandyopadhyay, P.Institute for Plasma Research, IndiaUNSPECIFIED
Sen, A.Institute for Plasma Research, IndiaUNSPECIFIED
Date:2018
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Volume:1925
DOI :10.1063/1.5020403
Editors:
EditorsEmail
Nemecek, ZdenekUNSPECIFIED
Pavlu, Jirijiri.pavlu@mff.cuni.cz
Safrankova, JanaUNSPECIFIED
Publisher:AIP
Series Name:DIVERSE WORLD OF DUSTY PLASMAS: Proceedings of the 8th International Conference on the Physics of Dusty Plasmas
ISBN:978-0-7354-1617-8
Status:Published
Keywords:Dusty Plasma, Solitary wave, Shock waves
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 - Forschung unter Weltraumbedingungen
DLR - Research theme (Project):R - Komplexe Plasmen / Laboratory research, R - Komplexe Plasmen / Data analysis, R - Komplexe Plasmen / Theory, Simulation
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Jaiswal, Surabhi
Deposited On:23 Feb 2018 15:52
Last Modified:28 Mar 2019 09:05

Repository Staff Only: item control page

Browse
Search
Help & Contact
Information
electronic library is running on EPrints 3.3.12
Copyright © 2008-2017 German Aerospace Center (DLR). All rights reserved.