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Cold atmospheric plasma - A new technology for spacecraft component decontamination

Shimizu, Satoshi and Barczyk, Simon and Rettberg, Petra and Shimizu, Tetsuji and Klaempfl, Tobias and Zimmermann, Julia L. and Hoeschen, Till and Linsmeier, Christian and Weber, Peter and Morfill, Gregor E. and Thomas, Hubertus (2014) Cold atmospheric plasma - A new technology for spacecraft component decontamination. Planetary and Space Science, 90, pp. 60-71. Elsevier. DOI: 10.1016/j.pss.2013.10.008 ISSN 0032-0633

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Abstract

Cold atmospheric plasma (CAP) based on the Surface Micro-Discharge (SMD) technology was investigated for inactivation of different bacteria and endospores. The used technique was developed to serve as an alternative method for the decontamination of spacecraft components based on the COSPAR planetary protection policy where currently the dry heat microbial reduction method is the only applicable way to satisfy the required demands. However it is known, that dry heat can thermally damage sophisticated components installed on the device. Therefore, the development of a low temperature sterilization system is one of the high priority issues for upcoming space missions in the extraterrestrial field. In the study presented here, the vegetative bacteria Escherichia coli and Deinococcus radiodurans and several types of bacterial endospores including Bacillus atrophaeus, Bacillus safensis, Bacillus megaterium, Bacillus megaterium 2c1 and Bacillus thuringiensis E24 - were inactivated by exposing them indirectly i.e. only to the reactive gases produced by the SMD electrode at room temperature. The results showed a 5 log inactivation for E. coli after 10 min of exposure. In contrast D. radiodurans proved to be more resistant resulting in a reduction of 3 log after exposure of 30 min. More than 6 log reductions were achieved for B. safensis, B. megaterium and B. megaterium 2c1 after 90 min of exposure. Furthermore the applicability of the used CAP system for spacecraft decontamination according to the planetary protection policy was investigated. This included also the investigation of the inactivation homogeneity by the plasma gas, the control of the temperature at the area of interest, the measurement of the O-3 density in the treatment region and the detailed investigation of the effects of the exposure on different materials.

Item URL in elib:https://elib.dlr.de/95337/
Document Type:Article
Title:Cold atmospheric plasma - A new technology for spacecraft component decontamination
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Shimizu, SatoshiMax-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
Barczyk, SimonGerman Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Rettberg, PetraRadiation Biology Department, Institute of Aerospace Medicine, German Aerospace Center (DLR), Cologne, Germany.UNSPECIFIED
Shimizu, TetsujiMax-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
Klaempfl, TobiasMax-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
Zimmermann, Julia L.Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
Hoeschen, TillMax-Planck-Institut für Plasmaphysik, EURATOM Association, Boltzmannstrasse 2, D-85748 Garching, GermanyUNSPECIFIED
Linsmeier, ChristianForschungszentrum Jülich GmbH, Institut für Energie- und Klimaforschung – Plasmaphysik, 52425 Jülich, GermanyUNSPECIFIED
Weber, PeterDeutsches Zentrum für Luft- und Raumfahrt e.V., Raumfahrtmanagement, Bemannte Raumfahrt, ISS und Exploration, Königswintererstrasse 522-524, 53227 Bonn, GermanyUNSPECIFIED
Morfill, Gregor E.Max-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
Thomas, HubertusDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Date:January 2014
Journal or Publication Title:Planetary and Space Science
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:90
DOI :10.1016/j.pss.2013.10.008
Page Range:pp. 60-71
Publisher:Elsevier
ISSN:0032-0633
Status:Published
Keywords:old atmospheric plasma; Surface micro-discharge; Planetary protection; Endospores; Decontamination
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:Research Group Complex Plasma
Deposited By: Thomas, Dr. Hubertus M.
Deposited On:23 Feb 2015 16:09
Last Modified:08 Mar 2018 18:48

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