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

Cold Atmospheric Plasma – �a New Technology�for Spacecraft Component Decontamination

Thomas, Hubertus and Shimizu, Satoshi and Shimizu, Tetsuji and Klaempfl, Tobias and Zimmermann, Julia L. and Morfill, Gregor E. and Barczyk, Simon and Rettberg, Petra and Weber, Peter (2014) Cold Atmospheric Plasma – �a New Technology�for Spacecraft Component Decontamination. 40th COSPAR Scientific Assembly, 2.-10.8.2014, Moscow, Russia. (Unpublished)

Full text not available from this repository.

Abstract

The search for extraterrestrial life is one of the most challenging science topics for the next decades. Space missions, like ExoMars, plan to land and search for biological remnants on planets and moons in our nearby Solar system. Planetary protection regulations defined by COSPAR prevent that during the mission biological contamination of the bodies occur through the space probes. Therefore decontamination of the probes and more general space equipment is necessary before the launch. The up-to-date accepted decontamination procedure originate from the old NASA Viking missions and use dry heat (T>110°C for 30h) – a technology not well suited for sensitive equipment nowadays. We investigated in a study financed by the German Space Agency* cold atmospheric plasma (CAP) as an alternative for such decontamination. It is well known that CAP can kill bacteria or spores within seconds or minutes, respectively, if the plasma is in direct contact with the treated sample. This procedure might also be quite aggressive to the treated surface materials. Therefore, we developed an afterglow CAP device specially designed for the soft treatment of space equipment. Afterglow plasma produced by a SMD device in air is transported into a “larger” treatment chamber where the samples are positioned. It could be shown that samples of different bacteria and spores, the latter defined by COSPAR as a means to show the effectiveness of the decontamination process, positioned on different materials (steel, Teflon, quartz) could be effectively inactivated. The surface materials were investigated after the plasma treatment to identify etching or deposition problems. The afterglow in the treatment chamber could even overcome obstacles (tubes of different height and diameter) which simulate more complicated structures of the relevant surfaces. Up to now, CAP looks like a quite promising alternative to decontaminate space equipment and need to be studied in greater detail in the near future. Details will be presented here.

Item URL in elib:https://elib.dlr.de/95339/
Document Type:Conference or Workshop Item (Speech)
Title:Cold Atmospheric Plasma – �a New Technology�for Spacecraft Component Decontamination
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Thomas, HubertusDLR Research Group Complex Plasma, OberpfaffenhofenUNSPECIFIED
Shimizu, SatoshiMax-Planck-Institut für extraterrestrische Physik, Giessenbachstrasse, 85748 Garching, GermanyUNSPECIFIED
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
Morfill, Gregor E.Max-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, GermanyUNSPECIFIED
Weber, PeterDeutsches Zentrum für Luft- und Raumfahrt e.V., Raumfahrtmanagement, Bemannte Raumfahrt, ISS und Exploration, Königswintererstrasse 522-524, 53227 Bonn, GermanyUNSPECIFIED
Date:2014
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Unpublished
Keywords:Cold atmospheric plasma; Surface micro-discharge; Planetary protection; Endospores; Decontamination
Event Title:40th COSPAR Scientific Assembly
Event Location:Moscow, Russia
Event Type:international Conference
Event Dates:2.-10.8.2014
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 16:10
Last Modified:23 Feb 2015 16:10

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.