The Mass Spectrometric Determination of Uranium-235 in Uranium Hexafluoride

Autor: W. Beyrich, G. Spannagel
Rok vydání: 1979
Předmět:
Zdroj: Nuclear Technology. 42:337-342
ISSN: 1943-7471
0029-5450
DOI: 10.13182/nt79-a32190
Popis: If different laboratories using thermionic mass spectrometry determine in routine operation a /sup 235/U concentration of approx. 0.7% in the same sample material, their measurement results deviate by at least 0.8% (relative) in approx. 50% of the cases. The application of gas mass spectrometry reduces this deviation to 0.1 or 0.05%, the more favorable value being obtained by measurements in which the same reference material is used by all laboratories. These results were obtained by application of an empirical evaluation procedure that, contrary to the usual statistical tools, is not restricted to homogeneous data material. The data were taken from two interlaboratory evaluation programs performed recently on the isotopic abundance determination of /sup 235/U in uranium hexafluoride by mass spectrometry.
Databáze: OpenAIRE