Direct burn-up determination of fast reactor mixed oxide (MOX) fuel by preferential evaporation of interfering elements

Quantitative determination of 137Cs and 90Sr in dissolver solutions without pre-separation by isotope dilution thermal ionization mass spectrometry

“…22) and 241 Am with 241 Pu. 25 Very recently, a similar method has been adopted by Li et al for the elimination of isobaric interference due to Rb in the measurement of isotopes of Sr in geological samples. 26 The preferential evaporation method is applicable for the analysis of elemental species that are present in a mixture, but having considerable differences in some of their thermophysical properties such as enthalpy of vaporization, vapor pressure and ionization energy.…”

Resolving isobaric interference in the determination of Nd isotopes using laser ionisation mass spectrometry towards atom percent fission measurements

“…Yet another method was demonstrated in our laboratory for a direct burn-up measurement 12,13 using ID-TIMS without any pre-separation and isobaric interference correction. In this method, dissolver solution is directly loaded onto a TIMS sample lament, followed by assay of the burn-up monitor (Nd) and HEs (U, Pu) in a sequential manner by preferential evaporation.…”