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Comparison of Mid-IR Spectra of Various Silicates Under High Vacuum

Heitmann, P and Weber, I. and Reitze, M.P. and Hiesinger, H. and Morlok, A. and Stojic, A. and Schmedemann, N. and Bauch, K.E. and Pasckert, J. H. and Helbert, Jörn (2023) Comparison of Mid-IR Spectra of Various Silicates Under High Vacuum. 54th Lunar and Planetary Science Conference 2023, 13.-17. Mar.2023, The Woodlands, USA.

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Official URL: https://www.hou.usra.edu/meetings/lpsc2023/pdf/2028.pdf


The analysis of spectral properties in the mid-IR range has become an important tool for the investigation of the surface mineralogy of Mercury [1]. The MERTIS-instrument (MErcury Radiometer and Thermal Infrared Spectrometer) collects emission spectra in the range of 7 μm to 14 μm (spectrometer channels) and 7 μm to 40 μm (radiometer channels) of surface-forming minerals [1]. The spectra can not only be used to investigate the surface evolution of Mercury, but provide also information about the evolutionary history of the early Solar System [1]. The minerals expected on Mercury include olivine and plagioclase, which is why we performed a detailed investigation of the spectral characteristics of these two minerals [2]. In particular, we used mixtures of the two minerals in different amounts, hence, producing relevant analog samples of Mercury in preparation of results of the MERTIS instrument. The samples were measured under conditions similar to the conditions on Mercury’s surface under high vacuum and in uncompressed state to serve as regolith analog. The measurements on the powders are particularly important, since the surface on Mercury is covered by loose regolith resulting from strong space weathering on this planet without atmosphere [1]. In addition, pellets were investigated to compare the results to [3,4], whether the spectra of the pressed pellets change compared to the loose sample. Thus, the results obtained for the loose powders are closer to reality than those for the tightly pressed samples. The aim of the study is to show whether the Christiansen feature (CF) in the mid-IR shows a linear dependence of the composition or not.

Item URL in elib:https://elib.dlr.de/196935/
Document Type:Conference or Workshop Item (Poster)
Title:Comparison of Mid-IR Spectra of Various Silicates Under High Vacuum
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Heitmann, PInstitute for Planetology, University of Münster, GermanyUNSPECIFIEDUNSPECIFIED
Weber, I.Institute for Planetology, University of Münster, GermanyUNSPECIFIEDUNSPECIFIED
Reitze, M.P.Institut für Planetologie, Westfälische Wilhelms‐Universität Münster, Münster, GermanyUNSPECIFIEDUNSPECIFIED
Hiesinger, H.Institute for Planetology, University of Münster, GermanyUNSPECIFIEDUNSPECIFIED
Morlok, A.Westfälische Wilhelms-Universität MünsterUNSPECIFIEDUNSPECIFIED
Stojic, A.Westfälische Wilhelms-Universität MünsterUNSPECIFIEDUNSPECIFIED
Schmedemann, N.Institute für Planetologie, Westfälische Wilhelms-Universität Münster, Münster, GermanyUNSPECIFIEDUNSPECIFIED
Bauch, K.E.Institut für Planetologie, Westfälische Wilhelms-Universität, Wilhelm-Klemm-Str. 10, 48149 Münster, GermanyUNSPECIFIEDUNSPECIFIED
Pasckert, J. H.Institut für Planetologie, Westfälische Wilhelms-Universität Münster, Wilhelm-Klemm-Strasse 10, 48149 Münster, GermanyUNSPECIFIEDUNSPECIFIED
Helbert, JörnUNSPECIFIEDhttps://orcid.org/0000-0001-5346-9505UNSPECIFIED
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:p. 2028
Series Name:LPI Contribution
Keywords:MERTIS, Spektroskopie
Event Title:54th Lunar and Planetary Science Conference 2023
Event Location:The Woodlands, USA
Event Type:international Conference
Event Dates:13.-17. Mar.2023
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Project BepiColombo - MERTIS and BELA
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Laboratories
Deposited By: Helbert, Dr.rer.nat. Jörn
Deposited On:01 Sep 2023 10:10
Last Modified:01 Sep 2023 10:10

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