Depth distributions of 14 cosmic-ray produced radionuclides in chrondrites and achondrites
of different sizes have been calculated. The dependence of depth distributions of different
radionuclides on compositions and pre-atmospheric sizes of meteorites, on temporal and …

Abstract On February 15, 2013, after the observation of a brilliant fireball and a spectacular
airburst over the southern Ural region (Russia), thousands of stones fell and were rapidly
recovered, bringing some extremely fresh material for scientific investigations. We undertook …

Cosmogenic radionuclides produced by galactic cosmic rays (GCR) in meteorites during
their motion in space are natural detectors of the GCR intensity and variations along the
meteorite orbits. On the basis of measured and calculated contents of cosmogenic …

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 …

Several radionuclides lighter than Ni, with half-life≥ 2 weeks and rare gas isotopes of He,
Ne, Ar, Kr (including 2× 10 5 year 81 Kr), and Xe have been measured in two samples from
the amphoterite Saint-Severin. The concentration of low-energy products 26 Al, 22 Na, 21 …

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 …

… to penetrate the meteorite beyond the thin layer removed by ablation. … The meteorite
orbit may have had a largeout-of-eclTiptic … SCR produced radionuclides including~Mn
and 59Ni that are not amenable …

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 …

Results of analysis of cosmogenic radionuclides (57, 58, 60Co, 54Mn, 46Sc, 22Na, 48V and
26Al) in fragments of the Košice meteorite are presented and discussed. Analyses were
carried out using a low-level HPGe-spectrometer placed in a lead-iron-copper shield …

Cosmic ray produced* Mn (t,,,= 3, 7x10" y) has been determined in seventeen antarctic
meteorites, among which, two have extremely low contents of* Mn: 101-6 dpm/kg Fe in
Yamato-7301 and 22--3 in Allan Hills No. 8. Even after corrections are made for …