A measurement of the isotopic composition of galactic cosmic ray carbon, nitrogen and oxygen

Details A measurement of the isotopic composition of galactic cosmic ray carbon, nitrogen and oxygen A measurement of the isotopic composition of galactic cosmic ray carbon, nitrogen and oxygen

Oct 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980icrc....1..412w&link_type=abstract

In: International Cosmic Ray Conference, 16th, Kyoto, Japan, August 6-18, 1979, Conference Papers. Volume 1. (A81-12386 02-93) T

Astronomy and Astrophysics

Astronomy

Carbon Isotopes, Cosmic Rays, Galactic Radiation, Interplanetary Space, Nitrogen Isotopes, Oxygen Isotopes, Abundance, Chemical Composition, High Resolution, Mass Ratios, Spaceborne Astronomy

Scientific paper

The paper reports the results of an investigation of the isotopic composition of galactic cosmic ray carbon, nitrogen and oxygen (80-230 MeV/amu) made using the U.C. Berkeley HKH instrument aboard the ISEE-3 spacecraft. The combination of high mass resolution and a large statistical sample makes possible a precise determination of the relative isotopic abundances for these elements. In local interplanetary space the following values are found: C-13/C = 0.067 + or - 0.008, N-15/N = 0.54 + or - 0.03, O-17/O less than 0.027, and O-18/O - 0.019 + or - 0.003.

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