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Measurement of gas temperatures in dust-free and dusty argon discharges

Pikalev, Aleksandr and Pustylnik, Mikhail and Räth, Christoph and Thomas, Hubertus M. (2020) Measurement of gas temperatures in dust-free and dusty argon discharges. Journal of Physics D: Applied Physics, 53 (7), 075203. Institute of Physics (IOP) Publishing. DOI: 10.1088/1361-6463/ab59aa ISSN 0022-3727

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Official URL: https://iopscience.iop.org/article/10.1088/1361-6463/ab59aa


Gas temperatures in an argon low-power capacitively-coupled rf discharge were measured by means of tunable diode laser absorption spectroscopy on 1s5 metastable states. It was shown that the uncertainty of the measurements in dust-free plasma could be minimized to ±1 K. In the presence of dust, due to instabilities in the dust subsystem (e.g. dust density waves), the uncertainty of the temperature measurements increased several times. Nevertheless, an evidence of the gas temperature increase in the presence of dust was detected. This result suggests that the microparticle suspensions, immersed in the low-pressure plasmas, significantly modify the temperature fields of the neutral gas.

Item URL in elib:https://elib.dlr.de/132715/
Document Type:Article
Title:Measurement of gas temperatures in dust-free and dusty argon discharges
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Pikalev, AleksandrAleksandr.Pikalev (at) dlr.dehttps://orcid.org/0000-0001-8843-074X
Pustylnik, MikhailMikhail.Pustylnik (at) dlr.deUNSPECIFIED
Räth, ChristophChristoph.Raeth (at) dlr.deUNSPECIFIED
Thomas, Hubertus M.Hubertus.Thomas (at) dlr.dehttps://orcid.org/0000-0001-8358-2023
Journal or Publication Title:Journal of Physics D: Applied Physics
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1088/1361-6463/ab59aa
Page Range:075203
Publisher:Institute of Physics (IOP) Publishing
Keywords:dusty plasma, laser absorption spectroscopy, gas temperature, rf discharge
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
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Deposited By: Pikalev, Aleksandr
Deposited On:16 Dec 2019 07:36
Last Modified:16 Dec 2019 07:36

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