Abstract
An activation analysis method has been developed for the routine determination of48Ca. The calcium is chemically separated, converted to the hydroxide, carbonate or chloride and activated for 30 min in the γ-ray flux generated by a primary electron beam between 40 and 57 MeV and a current of about 50 μA. A large number of samples can be activated simultaneously and the ratio of activities of47Ca and43K gives a measure of the isotopic concentration of48Ca. Naturally-occurring44Ca is used as an internal standard. The relative standard deviation is ±3.3%.
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Peisach, M. Isotopic determination of48Ca by photon activation. J. Radioanal. Chem. 13, 193–200 (1973). https://doi.org/10.1007/BF02514123
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DOI: https://doi.org/10.1007/BF02514123