Production of cosmogenic nuclides in meteoroids: simulation experiments and modelling
| Autor: | Jörg Beer, B. Dittrich, P. Cloth, Detlef Filges, Rolf Michel, P. Dragovitsch, Willy Wölfli, U. Herpers, Thomas Schiffmann |
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| Rok vydání: | 1989 |
| Předmět: |
Physics
Proton Meteoroid Monte Carlo method Radiochemistry Biochemistry Analytical Chemistry Nuclear physics Synchrocyclotron Electrochemistry Environmental Chemistry Astrophysics::Earth and Planetary Astrophysics Irradiation Cosmogenic nuclide Nuclear Experiment Spectroscopy Excitation Beam (structure) |
| Zdroj: | The Analyst. 114:295-301 |
| ISSN: | 1364-5528 0003-2654 |
| DOI: | 10.1039/an9891400295 |
| Popis: | The production of cosmogenic nuclides in meteoroids by galactic protons was simulated in a series of thick-target experiments at the 600-MeV proton beam of the CERN synchrocyclotron. Using a special technique, isotropic irradiation of three artificial meteoroids made out of diorite and gabbro with radii of 5, 15 and 25 cm was performed. Results obtained for the production of 22Na, 44Ti and 10Be from Ti and Fe are reported. The experimental data were compared with model calculations based on Monte Carlo calculations of the high-energy transport of primary and secondary particles and on experimental and theoretical thin-target excitation functions. A method for translating the results obtained for the monoenergetic 600-MeV irradiations to real irradiation in space by a complex p-spectrum is presented. |
| Databáze: | OpenAIRE |
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