The reaction Mg/n, alpha/Ne at 14.1 and 14.7 MeV - Cross sections and implications for meteorites

Details The reaction Mg/n, alpha/Ne at 14.1 and 14.7 MeV - Cross sections and implications for meteorites The reaction Mg/n, alpha/Ne at 14.1 and 14.7 MeV - Cross sections and implications for meteorites

Aug 1979

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1979e%26psl..44..341r&link_type=abstract

Earth and Planetary Science Letters, vol. 44, no. 2, Aug. 1979, p. 341-348.

Computer Science

17

Cosmic Rays, Magnesium, Meteorites, Neon Isotopes, Neutron Irradiation, Chemical Composition, Cross Sections, Electromagnetic Interactions, Energetic Particles, Mass Spectroscopy, Particle Energy, Silicon, Meteorites, Mass Spectroscopy, Magnesium, Neon, Isotopes, Models, Cosmic Rays, Stony Meteorites, Silicon, Data, Keyes Meteorite, St. Severin Meteorite, Chemical Composition, Chondrites, Irradiation, Energy, Flux, Depths

Scientific paper

Mass spectroscopic analysis of neutron-irradiated targets of natural magnesium yields cross sections of 59 + or - 14, 160 + or - 8, and 11.0 + or - 3.3 mb for Ne-20, Ne-21 and Ne-22, respectively, at 14.1 MeV and of 94 + or - 8, 152 or - 12, and 13.0 + or - 2.0 mb at 14.7 Mev. Using these cross sections, calculations modeling cosmic ray interactions in stony meteoroids of radii 20 and 26 cm predict that between the surface and the center the Ne-22/Ne-21 ratio falls more than 10% while the Ne-21 production rate rises about 30%. Calculations are compared with published neon measurements for the Keyes and St. Severin meteorites.

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