Interpretation of cosmogenic nuclides in meteorites on the basis of accelerator experiments and physical model calculations.

Details Interpretation of cosmogenic nuclides in meteorites on the basis of accelerator experiments and physical model calculations. Interpretation of cosmogenic nuclides in meteorites on the basis of accelerator experiments and physical model calculations.

Dec 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998piase.107..441m&link_type=abstract

Proc. Indian Acad. Sci., Earth Planet. Sci., Vol. 107, No. 4, p. 441 - 457

Physics

1

Meteorites: Cosmic Rays

Scientific paper

Cosmogenic nuclides in extraterrestrial matter provide a wealth of information on the exposure and collision histories of small objects in space and on the history of the solar and galactic cosmic radiation. The interpretation of the observed abundances of cosmogenic nuclides requires detailed and accurate knowledge of their production rates. Accelerator experiments provide a quantitative basis and the ground truth for modeling cosmogenic nuclide production by measurements of the relevant cross sections and by realistic simulations of the interaction of galactic protons with meteoroids under completely controlled conditions, respectively. The authors review the establishment of physical model calculations of cosmogenic nuclide production in extraterrestrial matter on the basis of such accelerator experiments and exemplify this approach by presenting new experimental and theoretical results for the cosmogenic nuclide 44Ti. The model calculations describe all aspects of cosmogenic nuclide production and allow the determination of long-term solar and galactic cosmic ray spectra and a consistent interpretation of cosmogenic nuclides.

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