Certification of uranium hexafluoride reference materials for isotopic composition

被引:0
|
作者
S. Mialle
S. Richter
C. Hennessy
J. Truyens
U. Jacobsson
Y. Aregbe
机构
[1] Institute for Reference Materials and Measurements (IRMM),European Commission, Joint Research Centre (JRC)
来源
Journal of Radioanalytical and Nuclear Chemistry | 2015年 / 305卷
关键词
Uranium hexafluoride; Reference material; Gas source mass spectrometry; Thermal ionization mass spectrometry; Nuclear safeguards;
D O I
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中图分类号
学科分类号
摘要
The IRMM-019 to IRMM-029 series of uranium hexafluoride materials is certified for the isotopic composition. After conversion into uranyl nitrate solution, certification and homogeneity measurements were performed by thermal ionization mass spectrometry. Analyses were performed by Modified Total Evaporation and for some materials the major isotope amount ratio n(235U)/n(238U) was measured using a n(233U)/n(236U) double spike. Measurements were confirmed by UF6 gas source mass spectrometry. Major isotope amount ratios were certified with relative expanded uncertainties (k = 2) of 0.015–0.030 % and the minor isotope amount ratios n(234U)/n(238U) and n(236U)/n(238U) were certified with relative expanded uncertainties of 0.02–3 %.
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页码:255 / 266
页数:11
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