23–25 mars 2022
Observatoire de Meudon
Fuseau horaire Europe/Paris

ANALYSIS OF ORGANIC MATTER AND MINERAL PHASES IN CM CHONDRITES BY TOF-SIMS COUPLED WITH IMAGING

23 mars 2022, 11:10
10m
Amphithéâtre & Salle des séminaires (Observatoire de Meudon)

Amphithéâtre & Salle des séminaires

Observatoire de Meudon

Observatoire de Paris, site de Meudon 5, place Jules Janssen, 92195 Meudon cedex
Oral presentation Astrophysics Talk

Orateur

Yann Arribard (IAS)

Description

The study of CM chondrites allows to obtain information from the first steps of the Solar System history and so better understand the origin of the organic matter. The aim of this study is to determine how the organic compounds structure varies and how they are related to the mineral phases depending on the hydrothermal alteration of the chondrites.
I will present Time Of Flight Secondary Ion Mass Spectrometry (TOF-SIMS) analysis coupled with imaging of slices of different chondrites: Cold Bokkeveld (CM2.2) and Paris (CM2.7-2.9). TOF-SIMS give the atomic and molecular composition, the structure of the organic and mineral phases and thanks to the imaging, the co-localization of those phases. I will focus on the distribution of the different organic families in the samples and their structural properties. Those results will be compared to previous InfraRed (IR) reflectance hyperspectral imaging and Raman analysis.

Field Planetology (including small bodies and exoplanets)

Author

Documents de présentation

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