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Plasma afterglow circulation apparatus for decontamination of spacecraft equipment

Müller, Meike and Shimizu, Tetsuji and Binder, Sylvia and Rettberg, Petra and Zimmermann, Julia L. and Morfill, Gregor E. and Thomas, Hubertus (2018) Plasma afterglow circulation apparatus for decontamination of spacecraft equipment. AIP Advances, 8 (10), p. 105013. American Institute of Physics (AIP). DOI: 10.1063/1.5040303 ISSN 2158-3226

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Official URL: http://dx.doi.org/10.1063/1.5040303

Abstract

A newly developed apparatus using cold atmospheric plasma (CAP) is presented, providing a useful alternative decontamination method for spacecraft equipment. The designed setup uses the plasma afterglow generated by a surface micro-discharge (SMD) technology and works with a circulating gas flow of ambient air at room temperature. Additionally, the apparatus allows the control of gas flow, plasma power and humidity, and offers O3 monitoring and a variable treatment volume. Within this study we examined the apparatus’ performance by evaluation of the inactivation efficacy of bacterial endospores Bacillus atrophaeus in different treatment volumes of 0.54 l, 1.8 l and 2.6 l. The experiments with Bacillus atrophaeus showed at least a 4.4 log reduction after the treatment times of 10, 20 and 30 min in the respective treatment chambers with a volume of 0.54 l, 1.8 l and 2.6 l. These results demonstrate that high sporicidal effects can be achieved with the newly developed apparatus, and that longer treatment times are needed for larger treatment volumes due to different filling rates of reactive components in different treatment volumes. Conclusively, these investigations illustrate the scalability of the designed apparatus up to 2.6 l for the afterglow treatment of samples with flat surfaces. The composition of the plasma afterglow was analysed by Fourier Transformation Infrared (FTIR) and UV absorption spectroscopy. The spectroscopic analyses identify O3, N2O, and HNO3 as predominant products of the CAP apparatus.

Item URL in elib:https://elib.dlr.de/122312/
Document Type:Article
Title:Plasma afterglow circulation apparatus for decontamination of spacecraft equipment
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Müller, MeikeDeutsches Zentrum für Luft- und Raumfahrt e.V., Institut für Materialphysik im Weltraum, Arbeitsgruppe Komplexe Plasmen, Münchener Str., 82234 Weßling, Germany; meike.mueller (at) dlr.deUNSPECIFIED
Shimizu, TetsujiElectronics and Photonics Research Institute, National Institute of Advanced Industrial Science and Technology, Umezono 1-1-1, Tsukuba 305-8568, JapanUNSPECIFIED
Binder, Sylviaterraplasma GmbH, Lichtenbergstraße, 85748 Garching bei München, GermanyUNSPECIFIED
Rettberg, PetraRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany; petra.rettberg (at) dlr.dehttps://orcid.org/0000-0003-4439-2395
Zimmermann, Julia L.terraplasma GmbH, Lichtenbergstraße, 85748 Garching bei München, GermanyUNSPECIFIED
Morfill, Gregor E.terraplasma GmbH, Lichtenbergstraße, 85748 Garching bei München, GermanyUNSPECIFIED
Thomas, HubertusDeutsches Zentrum für Luft- und Raumfahrt e.V., Institut für Materialphysik im Weltraum, Arbeitsgruppe Komplexe Plasmen, Münchener Str., 82234 Weßling, GermanyUNSPECIFIED
Date:10 October 2018
Journal or Publication Title:AIP Advances
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:8
DOI :10.1063/1.5040303
Page Range:p. 105013
Publisher:American Institute of Physics (AIP)
ISSN:2158-3226
Status:Published
Keywords:cold atmospheric plasma (CAP), decontamination method, spacecraft Equipment, Bacillus atrophaeus
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 / Theory, Simulation
Location: Köln-Porz , Oberpfaffenhofen
Institutes and Institutions:Institute of Materials Physics in Space > Research Group Complex Plasma
Institute of Aerospace Medicine > Radiation Biology
Deposited By: Kopp, Kerstin
Deposited On:16 Nov 2018 15:02
Last Modified:16 Nov 2018 15:02

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