Tof-sims Analysis of Isotopically Anomalous Phases in Interplanetary Dust and Renazzo

The Presence and Absence of Different Isotopically Anomalous Phases in the Primitive Interplanetary Dust Particle Tiberius

The Presence and Absence of Different Isotopically Anomalous Phases in the Primitive Interplanetary

Introduction: Interplanetary dust particles (IDPs) sample material preserved from the earliest formation of the solar system. Recent work shows the existence of a subgroup of IDPs characterized as isotopically primitive [1, 2]. These IDPs have anomalous bulk N isotopic compositions and contain abundant circumstellar and interstellar phases. We have been examining one such IDP, nicknamed Tiberiu...

D-rich Water in Interplanetary

Introduction: Hydrogen isotopic compositions in interplanetary dust particles (IDPs), in the form of D enrichments, provide unequivocal evidence for the survival of presolar organic matter (e.g., [1-4]). D/H enrichments of up to 50,000 o / oo have been reported from IDPs and such extreme values are presumably produced by ion-molecule reactions at 10-50 K in molecular clouds [1]. Although the ph...

TOF-SIMS in Cosmochemistry

Time-of-flight secondary ion mass spectrometry (TOF-SIMS) was introduced into cosmochemistry about a decade ago. Major advantages of TOF-SIMS compared to other ion microprobe techniques are (a) parallel detection of all secondary ions with one polarity in a single measurement – both polarities in subsequent analyses, (b) high lateral resolution, (c) sufficient mass resolution for separation of ...

Applications of TOF-SIMS in Planetology

In planetology the analysis of micrometer-sized samples like, e.g., inclusions in meteorites, interplanetary dust, and presolar grains has become more and more important. This requires techniques with high lateral resolution, no or little sample destruction, and high sensitivity. To still obtain unbiased information on this kind of samples a technique or a suite of techniques has to be selected...