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Campo del Cielo Iron Meteorite: Sample Shielding and Meteoroids Preatmospheric Size

Liberman, R G; Fernandez Niello, J O; di Tada, M.; Fifield, L Keith; Reedy, R.C.; Masarik, J


Long-lived cosmogenic radioisotopes, 10Be, 26Al, 36Cl, 41Ca and 59Ni, have been measured in five samples from the Campo del Cielo iron meteorite by accelerator mass spectrometry (AMS). The 36Cl activities were significantly above the background. For the concentrations of the other four radioisotopes, only upper limits were obtained that were, however, consistent with the 36Cl result. The measured 36Cl activity allowed an estimate of the meteoroid's preatmospheric size: a radius larger than 300...[Show more]

CollectionsANU Research Publications
Date published: 2002
Type: Journal article
Source: Meteoritics and Planetary Science


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