Coupling of imaging NEXAFS with secondary ion mass spectrometry for the chemical and isotopic analysis of presolar cosmic grains.
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.
Berg
Thomas
T
Institut für Physik, Universität Mainz, Staudingerweg 7, 55128 Mainz, Germany. BergT@uni-mainz.de
Maul
Jochen
J
Erdmann
Nicole
N
Bernhard
Pasqual
P
Schuppler
Stefan
S
Nagel
Peter
P
Sudek
Christa
C
Ott
Ulrich
U
Schönhense
Gerd
G