Context. Little is known about the stellar environment and the genealogy of our solar system.
Short-lived radionuclides (SLRs, mean lifetime τ shorter than 100 Myr) that were present in
the solar protoplanetary disk 4.56 Gyr ago could potentially provide insight into that key …

The record of the interaction of cosmic ray particles with meteoroids in space is preserved in
these objects in radioactive and stable nuclides. In order to determine the low
concentrations of long-lived radionuclides such as 10 Be (T 1/2= 1.6× 10 6 a), 26 Al (T 1/2 …

Model calculations were performed for the production of cosmogenic nuclides by solar
protons in meteorites. Depth-dependent proton spectra are derived via energy loss
calculations for a simple irradiation geometry (vertical incidence on a half plane). In a …

Variations in the abundances of short-lived radionuclides such as 26 Al (τ 1/2≈ 0.74 Ma)
and 53 Mn (τ 1/2≈ 3.7 Ma) in meteoritic solids may be used to infer relative formation
intervals of these solids in the nebula at precisions of less than 1 Ma. In a strict chronometric …

… the depth distributions of cosmogenic radionuclides in meteorites of different size and
composition. The knowled,ge of these … the heliosphere duriz~ di±Terent time periods by
using the measured values of radioactivity of cosmogenic isotopes in meteorites. … with …

Cosmogenic radionuclides with half-life periods T1/2 ranging from several days to a million
years, produced in the nuclear reactions of galactic cosmic rays (GCR) with meteoritic
matter, provide valuable information on the GCR intensity variations on a long time scale …

A large-volume HPGe gamma-ray spectrometer in a NaI (Tl) well has been set up
underground at 70 mwe depth for whole body counting of cosmogenic radionuclides in
meteorites. The detectors are housed in a 20 cm thick lead shield with a lining of cadmium …

We have developed a highly efficient and selective gamma-ray spectrometer with extremely
low background for activity measurement of gamma emitting cosmogenic radionuclides in
meteorites. This spectrometer can operate in specific modes to match decay scheme of a …

Radionuclides and noble‐gas isotopic abundances have been determined in two recently
fallen meteorites, Lost City and Murchison; noble‐gas isotopic abundances in two additional
meteorites, Ucera and Allende, have also been determined. Gas‐retention ages for Lost …

… Decay scheme of A126 Norton County achondrite and Rezolin shell Beardsley I (Smithsonian
Institution) gamma-ray spectrum Beardsley II (Michigan State University) gamma-ray
spectrum Beardsley III (Arizona State University) gamma-ray spectrum Harleton chondrite …