Abstract
CONSIDERABLE work has been done in the past decade on the separation and determination of relatively small amounts of tantalum and niobium. However, no adequate method for the determination of these elements seems to have been devised. Although neutron activation analysis has provided a good tool for the determination of many elements, no satisfactory results have been obtained for niobium in tantalum. The reasons are as follows: (1) small cross-section for the 93Nb(n, γ)-94mNb reaction (1.1 ± 0.1 barn); (2) 94mNb has a short half-life (6.6 min) and emits a weak γ-ray (0.0415 MeV); (3) chemical similarity of these elements.
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References
James, R. A., Phys. Rev., 93, 288 (1954).
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TOMITA, I., SAISHO, H. Radioactivation Analysis of Niobium in Tantalum by Irradiation with Protons in a Cyclotron. Nature 195, 1189–1190 (1962). https://doi.org/10.1038/1951189a0
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DOI: https://doi.org/10.1038/1951189a0
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