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- W2070629865 abstract "Mass spectrometric analyses of neutron-irradiated targets of natural magnesium yield cross sections of59 ± 14,160 ± 8, and11.0 ± 3.3mb for20Ne,21Ne, and22Ne, respectively, at 14.1 MeV and of94 ± 8,152 ± 12, and13.0 ± 2.0mb at 14.7 MeV. With the incorporation of these cross sections, calculations modeling cosmic-ray interactions in stony meteoroids of radii 20 and 26 cm predict that between the surface and center the22Ne/21Ne ratio falls more than 10% while the21Ne production rate rises about 30%. The reaction24Mg(n,α)21Ne predominantly controls these trends: the22Ne/21Ne ratio due to magnesium decreases over 15% while that due to silicon remains constant with increasing depth. The calculations are compared with published neon measurements for the Keyes and St. Séverin meteorites." @default.
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- W2070629865 date "1979-08-01" @default.
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- W2070629865 title "The reaction Mg(n,α)Ne at 14.1 and 14.7 MeV: cross sections and implications for meteorites" @default.
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- W2070629865 doi "https://doi.org/10.1016/0012-821x(79)90182-1" @default.
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