The N ano SIMS ion probe is a new‐generation SIMS instrument, characterised by superior
spatial resolution, high sensitivity and multi‐collection capability. Isotope studies of certain …

Silicate dust particles are an important player in the cosmic life cycle of matter. They have
been detected in a wide variety of environments, ranging from nearby protoplanetary disks …

Cometary material and pristine interplanetary dust particles (IDPs) best resemble the
unaltered components from which our solar system was built because they have remained …

Secondary ion mass spectrometry (SIMS) constitutes an extremely sensitive technique for
imaging surfaces in 2D and 3D. Apart from its excellent sensitivity and high lateral resolution …

We report the identification of presolar silicates (∼ 177 ppm), presolar oxides (∼ 11 ppm),
and one presolar SiO 2 grain in the Allan Hills (ALHA) 77307 chondrite. Three grains having …

Context. The interstellar medium is enriched primarily by matter ejected from evolved low
and intermediate mass stars. The outflow from these stars creates a circumstellar envelope …

Close to a thousand presolar silicate grains have been identified since their initial discovery
in interplanetary dust particles (IDPs) just over ten years ago. Studies have shown that …

The formation of dust in the outflows of low-and intermediate-mass stars on the first giant
branch and asymptotic giant branch (AGB) is studied and the relative contributions of stars of …

Hot line lists for two isotopologues of water, H218O and H217O, are presented. The
calculations employ newly constructed potential energy surfaces (PES), which take …

Systematic variations in 54Cr/52Cr ratios between meteorite classes (Trinquier et al., 2007;
Qin et al., 2010a) point to large scale spatial and/or temporal isotopic heterogeneity in the …