PhD CIFRE - MNHN/GPM with CamecaNano-caractérisation des volatiles dans les matériaux extraterrestres

Context:

This thesis is part of a wider project COSMO-SAT (P.I. A.-M. Seydoux-Guillaume, Co-P.I. F. Vurpillot and M. Roskosz) from the PEPR Origins.

The objective of COSMO-SAT will be to develop a new generation of tomographic atomic probe dedicated to the analysis of geological and cosmological samples in order to significantly improve their quantitative and isotopic measurements at the nanometric scale. Measuring quantitatively the elemental and isotopic composition of samples, down to the atomic scale, allows to trace and quantify the irradiation processes and the gas-grain interactions in the protoplanetary disk, to determine the origin of pre-solar grains and their associated nucleosynthesis, as well as the origin of primitive complex objects such as GEMS (i.e. glass containing metals and sulfides). It will allow us to launch the first nano-geochronology studies on extraterrestrial samples. The project has several ambitious instrumental improvement objectives. One of them concerns the development of cryo-preparation of samples to improve the measurement of light atoms (H, He, C, …) volatile at room temperature and is at the centre of the present PhD.

More details here:

https://lgltpe.fr/thesis-cifre-nanocharacterization-of-volatiles-in-extraterrestrial-materials/

https://pepr-origins.fr/2025/02/26/thesis-cifre-nanocharacterization-of-volatiles-in-extraterrestrial-materialsthesis-grant-m-f-interferometry-for-the-direct-detection-of-extrasolar-planets-2/

Profile:

Formation: Master in Material or Earth Sciences or engineering degree in physics/mechanics/materials science.

Skills: Strong interest and appetence for instrumentation and materials characterization. Motivation.

Application: Interested candidates should send a short CV (including the list of papers/communications) + a letter of motivation + a letter of recommendation, by email to Frédéric Danoix (GPM; frederic.danoix@univ-rouen.fr), Mathieu Roskosz (IMPMC/MNHN; mathieu.roskosz@mnhn.fr) and Laurent Arnoldi (CAMECA; laurent.arnoldi@ametek.com)

Start: October 2025 (flexible on few months)

Working places:

Groupe de Physique des Matériaux (GPM) in Rouen (https://gpm.univ-rouen.fr/), and CAMECA (Genevilliers, France and Madison, USA), world leader in APT systems commercialization. Visit to other labs implied in the COSMO-SAT project (e.g. IMPMC/MNHN in Paris).