Characterization of Mineral Targets by Laser Desorption and Ionization in Preparation of the MOMA Investigation Onboard the ExoMars-2018 Rover

Abstract : The MOMA instrument (Mars Organic Molecule Analyzer [1]) onboard the ESA-Roskosmos led ExoMars-2018 rover mission shall investigate Martian near-surface samples by Laser De-sorption and Ionization (LDI). This experimental technique uses UV laser impact to ablate molecular fragments that shall be analyzed by mass spectrometry and is thus geared towards characterization of the organic inventory in Martian subsurface samples. Here we present an end-to-end LDI experiment performed on a small (though diverse) set of terrestrial inorganic samples (minerals). The experiment has the following goals: (1) explore the possibility to identify minerals by LDI, (2) characterize the physical interaction between laser and mineral by measuring the average mass of ablated material per laser shot, and (3) present data acquired by the MOMA engineering test unit (ETU) at NASA GSFC. The recorded mass peaks are part of the " background " that will be encountered during any in situ measurement on the surface of Mars and in which peaks of organic compounds are embedded. Hence such data contribute to a reference data set that will be important to interpret complex spectra of any organic-bearing sedimentary rocks on Mars.
Complete list of metadatas

https://hal-insu.archives-ouvertes.fr/insu-01285874
Contributor : Catherine Cardon <>
Submitted on : Wednesday, March 9, 2016 - 7:15:28 PM
Last modification on : Friday, October 4, 2019 - 1:18:48 AM
Long-term archiving on : Monday, June 13, 2016 - 9:13:06 AM

File

2614.pdf
Files produced by the author(s)

Identifiers

  • HAL Id : insu-01285874, version 1

Citation

Walter Goetz, Ricardo Arevalo, Veronica Pinnick, Ryan Danell, Stéphanie Getty, et al.. Characterization of Mineral Targets by Laser Desorption and Ionization in Preparation of the MOMA Investigation Onboard the ExoMars-2018 Rover. 47th Lunar and Planetary Science Conference, Mar 2016, The Woodlands, Texas, United States. ⟨insu-01285874⟩

Share

Metrics

Record views

577

Files downloads

93