The isotopic abundance and atomic weight of natural uranium |
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Authors: | Yongfu Liu Shuchun Fu |
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Institution: | (1) China Institute of Atomic Energy, 102413 Beijing, China |
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Abstract: | Conclusion The published measurement data of atomic weight of uranium are shown in table 49]. The best results are those measured by Smith and Cowanet al. A
r (U) = 238.028 79–238.028 90(3), their result error being ISD. The evaluated value of IUPAC-CAWIA is Ar(U)=238.028 9(1). In this work, the result is Ar(U) = 238.028 91(4). The combined uncertainty has been given according to 2SD of the measurement data through the calibration
of a series of standard materials of uranium isotopes. It is reasonable to conclude that in this work the uncertainty which
characterizes the measurement quality is better than other published data. |
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Keywords: | isotopic abundance of uranium atomic weight of uranium mass spectrometric measurement |
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