Helium and neon isotopes in stratospheric particles

Details Helium and neon isotopes in stratospheric particles Helium and neon isotopes in stratospheric particles

Dec 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990metic..25..263n&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 25, Dec. 1990, p. 263-267.

Computer Science

42

Abundance, Atmospheric Composition, Helium Isotopes, Interplanetary Dust, Neon Isotopes, Stratosphere, Lunar Soil, Lunar Surface, Meteoritic Composition, Zodiacal Light

Scientific paper

He and Ne isotope ratios were determined for 16 interplanetary dust particles (IDPs) collected in the stratosphere. The observed He concentration varied greatly from particle to particle, with the highest values approaching those found for lunar surface fines and some gas-rich meteorites. The average Ne-20/Ne-22 ratio was 12.0 + or - 0.5. The data suggest that the observed IDPs could have entered the atmosphere at relatively low velocities, and hence may be primarily of asteroidal rather than cometary origin.

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