Rate of accretion of cosmic dust on the earth determined from neon isotopes in earth formations

Details Rate of accretion of cosmic dust on the earth determined from neon isotopes in earth formations Rate of accretion of cosmic dust on the earth determined from neon isotopes in earth formations

Nov 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977dossr.237..284a&link_type=abstract

Akademiia Nauk SSSR, Doklady, vol. 237, Nov. 11, 1977, p. 284-287. In Russian.

Physics

1

Cosmic Dust, Earth Surface, Neon Isotopes, Particulate Sampling, Deposition, Gravitational Effects, Magnetic Resonance, Mass Spectroscopy, Rates (Per Time)

Scientific paper

A precision isotopic technique involving magnetic-resonance mass spectroscopy has been used to determine the rate of cosmic dust accretion on the basis of neon isotope (Ne-20/Ne-22) concentrations in different earth structural formations. The value of accretion rate that was obtained is somewhat greater than expected given the effects of the melting and burnup of a fraction of the particles in the atmosphere. The dominant role of factors which would produce an increase in the rate (the focusing effect of the gravity field, the greater flux of dust in the past, etc.) is emphasized.

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