Research Collection Journal Article The constancy of galactic cosmic rays as recorded by cosmogenic nuclides in iron meteorites Author(s): Smith, Thomas; Cook, David L.; Merchel, Silke; Pavetich, Stefan; Rugel, Georg; Scharf, Andreas; Leya, Ingo Publication Date: 2019-12 Permanent Link: https://doi.org/10.3929/ethz-b-000382444 Originally published in: Meteoritics & Planetary Science 54(12), http://doi.org/10.1111/maps.13417 Rights / License: Creative Commons Attribution 4.0 International This page was generated automatically upon download from the ETH Zurich Research Collection. For more information please consult the Terms of use. ETH Library Meteoritics & Planetary Science 54, Nr 12, 2951–2976 (2019) doi: 10.1111/maps.13417 The constancy of galactic cosmic rays as recorded by cosmogenic nuclides in iron meteorites Thomas SMITH1,4, David L. COOK 2, Silke MERCHEL3, Stefan PAVETICH3,5, Georg RUGEL3, Andreas SCHARF3, and Ingo LEYA 1* 1Physics Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland 2Institute for Geochemistry and Petrology, ETH Zurich,€ Clausiusstrasse 25, 8092 Zurich,€ Switzerland 3Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328 Dresden, Germany 4Present address: Institute of Geology and Geophysics, Chinese Academy of Sciences, 19 Beitucheng Western Road, Box 9825, 100029 Beijing, People’s Republic of China 5Present address: Department of Nuclear Physics, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 2601, Australia *Corresponding author. E-mail:
[email protected] (Received 14 December 2018; revision accepted 16 October 2019) Abstract–We measured the He, Ne, and Ar isotopic concentrations and the 10Be, 26Al, 36Cl, and 41Ca concentrations in 56 iron meteorites of groups IIIAB, IIAB, IVA, IC, IIA, IIB, and one ungrouped.