Heavily irradiated grains and neon isotope anomalies in carbonaceous chondrites
1976; IOP Publishing; Volume: 206; Linguagem: Inglês
10.1086/182163
ISSN1538-4357
AutoresJ. Audouze, Jean‐Pierre Bibring, J.-C. Dran, M. Maurette, R. M. Walker,
Tópico(s)Nuclear Physics and Applications
Resumoview Abstract Citations (23) References (23) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Heavily irradiated grains and neon isotope anomalies in carbonaceous chondrites. Audouze, J. ; Bibring, J. P. ; Dran, J. C. ; Maurette, M. ; Walker, R. M. Abstract High-voltage microscope observations of micron-sized grains extracted from a fraction of the Orgueil meteorite rich in Ne-22 give strong experimental evidence for their heavy irradiation. It is suggested that the excess of Ne-22 measured in the same mineral separate can be explained by low-energy (less than 10 MeV) production by (p, alpha) reaction on Mg-25. A discussion of the astrophysical sites potentially responsible for the peculiar irradiation history of the meteoritic grains is presented. Publication: The Astrophysical Journal Pub Date: June 1976 DOI: 10.1086/182163 Bibcode: 1976ApJ...206L.185A Keywords: Carbonaceous Chondrites; Irradiation; Meteoritic Composition; Neon Isotopes; Granular Materials; Ion Temperature; Minerals; Lunar and Planetary Exploration full text sources ADS |
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