cover image: Preparation and Certification of Large-Sized Dried (LSD) Spike - IRMM-1027u : certified reference material for the masses of 239Pu, 235U, 238U and Pu and U isotope amount ratios.

20.500.12592/pcc419

Preparation and Certification of Large-Sized Dried (LSD) Spike - IRMM-1027u : certified reference material for the masses of 239Pu, 235U, 238U and Pu and U isotope amount ratios.

12 Mar 2020

The designations employed and the presentation of material on the maps do not imply the expression of any opinion whatsoever on the part of the European Union concerning the legal status of any country, territory, city or area or of its authorities, or concerning the delimitation of its frontiers or boundaries. [...] The certified values were obtained from the gravimetric preparation of the mother solution, taking into account the mass, purity and isotopic composition of the starting materials, the mass of the mother solution, and the mass of an aliquot in each individual unit. [...] The certified masses of plutonium and uranium and the certified values of the uranium and plutonium isotope amount ratios are based on the data from the weighing certificates and the certificates of the starting materials (metals). [...] The results of the process control measurements for 235U, 238U, and 239Pu amount contents as well as the uranium and plutonium isotope amount ratios in the mother solution of IRMM-1027u were compatible with the values from the gravimetric preparation, except the four aliquots for the n(238Pu)/n(239Pu) amount ratio. [...] Moreover, the results of the process control measurements (see Section 3.3) for the uranium and plutonium isotope amount ratios agreed with the values from the gravimetric preparation, confirming the isotope mixing of the metals.
nuclear research research report research method approval nuclear fuel

Authors

European Commission, Joint Research Centre

Catalogue Number
KJ-NA-30137-EN-N
Creator
Publications Office of the European Union
DOI
https://doi.org/10.2760/68399
ISBN
9789276173229
ISSN
18319424
Published in
Belgium
Rights
© European Union