Stuttgart 2012 – wissenschaftliches Programm

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MS: Fachverband Massenspektrometrie

MS 9: Accelerator Mass Spectrometry and Applications II

MS 9.2: Vortrag

Freitag, 16. März 2012, 10:45–11:00, V57.06

Cosmogenic nuclides in meteorites — •Silke Merchel1, Shavkat Akhmadaliev1, Georg Rugel1, Julia A. Cartwright2, Ulrich Ott2, Thomas Faestermann3, Leticia Fimiani3, Gunther Korschinek3, and Peter Ludwig31Helmholtz-Zentrum Dresden-Rossendorf, Dresden, Germany — 2MPI für Chemie, Mainz, Germany — 3TU München, Garching, Germany

After successful installation of the Dresden Accelerator Mass Spectrometry (DREAMS) facility [1], determinations of the lighter radionuclides 10Be, 26Al, and 41Ca are now easily attainable in Germany. Accompanied by data for the heavier radionuclides (i.e. 53Mn and 60Fe) that can be measured at the 14 MV tandem at Munich and stable nuclides such as 21,22Ne and 38Ar from noble gas mass spectrometry at MPI Mainz, complete and unique exposure histories of extraterrestrial material can be reconstructed.

For example, recent analyses of the 100th Martian meteorite Ksar Ghilane 002 [2] and four samples from the nickel-rich ataxite Gebel Kamil [3] show interesting features revealing amazing stories.

Ackn.: A. Bischoff and L. Folco are thanked for providing meteorite material and data for bulk chemical data.

Ref.: [1] G. Rugel et al., this meeting. [2] J. Llorca et al., submitted to Meteorit. Planet. Sci.. [3] L. Folco et al., Science 329 (2010) 804.

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