On the production of cosmogenic nuclides in meteorites by primary galactic particles: Cross sections and model calculations
- 15 February 1984
- journal article
- Published by American Geophysical Union (AGU) in Journal of Geophysical Research
- Vol. 89 (S02) , B673-B684
- https://doi.org/10.1029/jb089is02p0b673
Abstract
Cross sections for the proton‐induced production of radionuclides (40≦A≦60) from natural titanium, iron, and nickel were measured for proton energies from 80 to 200 MeV. To critically survey the theoretical predictions of unknown excitation functions, the experimental data were compared with calculations according to Blann's hybrid model of nuclear reactions and to the semiempirical formulas of Rudstam and of Silberberg and Tsao. Then, based mainly on the new excitation functions, the production rates of cosmogenic radionuclides in meteorites by primary galactic protons were calculated. Since the interaction of primary solar and galactic particles with meteorites can be described with accuracy, the model calculations allow for a quantitative estimate of the action of secondary particles in meteorites. A method of completely describing the production of cosmogenic nuclides in meteorites that takes into account all sources of production is proposed.Keywords
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