Al-26 and rare gases in Allende, Bereba and Juvinas - Implications for production rates

Details Al-26 and rare gases in Allende, Bereba and Juvinas - Implications for production rates Al-26 and rare gases in Allende, Bereba and Juvinas - Implications for production rates

Mar 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980gecoa..44..539h&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 44, Mar. 1980, p. 539-547.

Computer Science

9

Aluminum 26, Chemical Composition, Meteoritic Composition, Rare Gases, Stony Meteorites, Carbonaceous Chondrites, Cosmology, Gas Analysis, Helium, Neon, Pyroxenes, Meteorites, Allende Meteorite, Bereba Meteorite, Juvinas Meteorite, Rare Gases, Production Rate, Aluminum 26, Isotopes, Magnesium, Samples, Meteorite, Major Elements, Minor Elements, Neon, Argon, Helium, Exposure Ages, Eucrites, Pyroxenes, Radiogenic Elements, Feldspar, Chondrites, Cosmic Rays, Stony Meteorites, Silicon, Data, Experiments, Proced

Scientific paper

The paper examines the production rates of Al-26 and rare gases in Allende, Bereba, and Juvinas. The production rate of Ne-21 from Al is determined; the He-3, Ne-21, and Ar-38 exposure ages of the eucritic pyroxenes agree suggesting complete cosmogenic gas retention. The eucritic feldspars have lost virtually all He-3 and most of the radiogenic He-4. An equation is derived which reproduces all of the measurements of Al-26 within 15% accuracy and also measures the average values in ordinary chondrites without a recourse to unusual cosmic-ray effects.

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