Measurement of cosmic ray produced Mn-53 in deep sea metallic spherulesCosmic ray originated Mn-53 nuclides were measured in deep sea metallic spherules by neutron activation analysis. The spherules may be fused micrometeoroids or ablation droplets from larger objects; the low activities of Mn-53 may indicate its evaporation loss resulting from the heating in the earth's atmosphere or short exposure age. The Mn-53 nuclide is now being measured in chondritic spherules, and Be-10 and Cl-36 concentrations are determined in individual spherules using ion counting methods.
Document ID
19810028021
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Nishiizumi, K. (California, University La Jolla, Calif., United States)
Brownlee, D. E. (Washington, University Seattle, Wash., United States)