Noble gases are not rare in the Universe, but they are rare in rocks. As a consequence, it
has been possible to identify in detailed analyses a variety of components whose existence …

Nanoparticles are ubiquitous in nature and are increasingly important for technology. They
are subject to bombardment by ionizing radiation in a diverse range of environments. In …

The fluence and isotopic composition of solar wind xenon have been determined from
silicon collector targets flown on the NASA Genesis mission. A protocol was developed to …

RELAX is an ultra sensitive, time of flight, resonance ionization mass spectrometer
specifically for measuring xenon isotope ratios. RELAX combines a resonance ionization …

We review the abundances, distributions and isotopic compositions of halogens in chondritic
meteorites and discuss formation of the mineral and other carriers of these elements …

The Paris carbonaceous chondrite represents the most pristine carbonaceous chondrite,
providing a unique opportunity to investigate the composition of early solar system materials …

Models capable of explaining the differences between the isotopic compositions of the
planetary noble gas components “Q” and “P3”(widespread in primitive meteorites) and …

Although the most abundant type of presolar grain found in meteorites is nanometer-sized
diamond (" nanodiamond"), the dimensions make study of individual crystallites rather …

RIMSKI–Resonance Ionization Mass Spectrometer for Krypton Isotopes–is a newly
developed ultra sensitive instrument with a cryogenic sample concentrator and a laser ion …

METHODS At its simplest, the I-Xe system involves subjecting aliquots of a set of samples to
the same neutron fluence, typically~ 1019 n cm–2. Atoms of 127I in the samples capture a …