PSEF Highlights

$Analysis of Extraterrestrial Samples Using Focused-beam X-ray Fluorescence and Diffraction Microtomography$

Analysis of Extraterrestrial Samples Using Focused-beam X-ray Fluorescence and Diffraction Microtomography

Jul 24, 2024

This study describes developments at our 13-ID-E microprobe beamline for simultaneous synchrotron-based XRF and XRD microtomographic analysis of unsectioned extraterrestrial samples. These methods provide new opportunities for spatially resolved characterization of...

Mapping the redox state of the young Solar System using ytterbium valence state

Jul 18, 2024

On Earth, most rare earth elements (REE) usually occur as 3+ cations. The primary exceptions being the elements europium and cerium, which can also be found as 2+ and 4+ cations respectively. In the case of ytterbium (Yb), only 3+ states have been reported so far....

Sulfur in apatite from the Nakhla meteorite record a late-stage oxidation event

Aug 30, 2022

The absorption indicatrix as an empirical model to describe anisotropy in X-ray absorption spectra of pyroxenes

Apr 1, 2022

Radiation-induced changes in vanadium speciation in basaltic glasses: Implications for oxybarometry measurements using vanadium K-edge X-ray absorption spectroscopy

Apr 1, 2022

Trace elemental behavior in the solar nebula: Synchrotron X-ray fluorescence analyses of CM and CR chondritic iron sulfides and associated metal

Jul 24, 2021