Development and optimization of X-ray based analytical techniques towards the analysis of rare extraterrestrial materials.

Micro-XRF spectroscopy, using synchrotron or conventional X-ray source based excitation, is a well-established non-destructive, microanalytical method, providing information on the elemental distributions in the probed sample. When three dimensional spatially resolved information is of interest, often a confocal micro-XRF detection scheme is applied as an alternative to XRF tomography. However, both methods pose significant challenges when attempting to quantify this data. This proposal aims the further development of quantitative 3D confocal XRF and XAS techniques for the detailed non-destructive and contamination free study of rare-earth element and heavy metal compositional information of unique extraterrestrial materials, acquired from a.o. the prestigious JAXA Hayabusa2 space mission. The project will focus on a) the development of a lab based XAS/XES instrument, as well as b) further developing 3D structural analysis by means of state-of-the-art full-field XAS and inelastic X-ray scattering methodologies. The experimental studies will be performed as a member of the Hayabusa2 analysis team, in close collaboration with the NanoGeoscience group lead by Prof. F.E. Brenker (Johann Wolfgang Goethe-University, Frankfurt, Germany). Currently approved research projects include: at the P06 Hard X-ray Micro/Nanoprobe at the PETRA III (Hamburg, Germany) and DUBBLE beamline (BM26 and BM14) at the ESRF (Grenoble, France) synchrotron radiation facilities.