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Molecular emissions in the laser-induced plasma in simulated Martian conditions - calibration models and new insights from plasma imaging

Vogt, David and Rammelkamp, Kristin and Hansen, Peder Bagge and Kubitza, Simon and Frohmann, Sven and Schröder, Susanne and Hübers, Heinz-Wilhelm (2019) Molecular emissions in the laser-induced plasma in simulated Martian conditions - calibration models and new insights from plasma imaging. In: SciX 2019. SciX 2019, 13.-18. Okt. 2019, Palm Springs, USA.

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Abstract

Molecular emissions in LIBS can be used to detect elements that do not have strong emission lines, such as Cl and F. This is interesting for Martian exploration, where Cl and F offer important clues about past environments. In this study, we investigate the relationship between the reactant concentrations and the intensities of the molecular emissions of MgCl, CaCl, and CaF. The intensities of CaCl and CaF emissions are well-described by the non-equilibrium calibration model that is introduced. Plasma imaging experiments show that the molecules only form close to the center, suggesting that the plasma temperature is unexpectedly low there, potentially due to rarefaction and radiative losses.

Item URL in elib:https://elib.dlr.de/131208/
Document Type:Conference or Workshop Item (Speech)
Title:Molecular emissions in the laser-induced plasma in simulated Martian conditions - calibration models and new insights from plasma imaging
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Vogt, DavidDavid.Vogt (at) dlr.deUNSPECIFIED
Rammelkamp, KristinKristin.Rammelkamp (at) dlr.deUNSPECIFIED
Hansen, Peder BaggePederBagge.Hansen (at) dlr.deUNSPECIFIED
Kubitza, SimonSimon.Kubitza (at) dlr.deUNSPECIFIED
Frohmann, SvenSven.Frohmann (at) dlr.deUNSPECIFIED
Schröder, SusanneSusanne.Schroeder (at) dlr.deUNSPECIFIED
Hübers, Heinz-WilhelmHeinz-Wilhelm.Huebers (at) dlr.deUNSPECIFIED
Date:13 October 2019
Journal or Publication Title:SciX 2019
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Mars Molecules Spectroscopy Plasma Halogens Experiments
Event Title:SciX 2019
Event Location:Palm Springs, USA
Event Type:international Conference
Event Dates:13.-18. Okt. 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben Robotischer Wissenschafts-Explorer, R - Vorhaben Optische Sensorik - Theorie, Kalibration, Verifikation
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Optical Sensor Systems > Terahertz and Laser Spectroscopy
Deposited By: Vogt, David
Deposited On:26 Nov 2019 10:24
Last Modified:26 Nov 2019 10:24

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