Radionuclide Composition of the Allende Meteorite from Nondestructive Gamma-Ray Spectrometric Analysis
作者： L. A. Rancitelli , R. W. Perkins , J. A. Cooper , J. H. Kaye , N. A. WogmaN
DOI: 10.1126/SCIENCE.166.3910.1269
关键词:
摘要: The concentrations of beryllium-7, sodium-22, aluminum-26, potassium-40, scandium-46, vanadium-48, chromium-51, manganese-54, cobalt-57, cobalt-60, and thorium-232 (thallium-208) have been measured in the Allende meteorite by nondestructive gamma-ray spectrometry. high cobalt-60 content is indicative a preatmospheric body with minimum effective radius 50 centimeters weight 1650 kilograms; aluminum-26 activity indicates exposure age 3 million years.
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