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Coupling of imaging NEXAFS with secondary ion mass spectrometry for the chemical and isotopic analysis of presolar cosmic grains |
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| Authors: | Thomas Berg Jochen Maul Nicole Erdmann Pasqual Bernhard Stefan Schuppler Peter Nagel Christa Sudek Ulrich Ott Gerd Schönhense |
| Affiliation: | 1. Institut für Physik, Universit?t Mainz, Staudingerweg 7, 55128, Mainz, Germany 2. Institut für Kernchemie, Universit?t Mainz, Fritz Strassmann Weg 2, 55128, Mainz, Germany 3. Forschungszentrum Karlsruhe, Institut für Festk?rperphysik (IFP), 76021, Karlsruhe, Germany 4. Max-Planck-Institut für Chemie, Joh.-Joachim-Becher-Weg 27, 55128, Mainz, Germany |
| Abstract: | We present first results of the combination of imaging photoemission electron spectroscopy with imaging mass spectrometry. Imaging NEXAFS was combined with TOF-SIMS in order to perform a spatially resolved chemical and isotopic analysis of microscopic grain samples. Imaging NEXAFS was used for the nondestructive lateral characterization of mineral phases prior to isotopically resolved mass analysis by imaging TOF-SIMS. This novel approach was demonstrated by performing a chemical and isotopic analysis of the rare presolar grain fraction present in the Murchison meteorite. |
| Keywords: | NEXAFS PEEM TOF-SIMS Presolar grains Mineral phases |
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