A green analytical approach for the direct non-destructive compositional analysis of (Th, U)O₂ fuel pellets by the X-Ray Fluorescence technique using single universal calibration

Abstract

(Th, U)O2 based Mixed Oxide (MOX) fuel is the proposed fuel in Advance Heavy Water Reactor (AHWR) which belongs to third stage among three stages of Indian nuclear power programme....

Investigation of the Thermal Properties of Alkali Metal Thorium Phosphates and Their Application for the Sorption of Uranyl Ion from Acidic Medium

“…The experimental details for TXRF analysis are discussed elsewhere. [39] The spectra before sorption shows the peak for Th Lα (12.97 keV) whereas spectra after sorption shows additional peak of U Lα (13.61 keV) confirming the sorption of UO 2 2 + ion on the surface of KTP1 and KTP3 [Figure 12(b)]. This argument agrees well with the fact that, UO 2 2 + sorption proceeded through Langmuir isotherm, predominantly following chemi-sorption (vide infra).…”

“…Hence, total reflection XRF (TXRF) measurements were carried out and the spectra for KTP1 and KTP3 before and after sorption of uranium are shown in Figure 12(b). The experimental details for TXRF analysis are discussed elsewhere [39] . The spectra before sorption shows the peak for Th Lα (12.97 keV) whereas spectra after sorption shows additional peak of U Lα (13.61 keV) confirming the sorption of UO 2 2+ ion on the surface of KTP1 and KTP3 [Figure 12(b)].…”

An X-ray fluorescence and machine learning based methodology for the direct non-destructive compositional analysis of (Th1−xUx)O2 fuel pellets

“…Previously, researchers have demonstrated the direct non-destructive compositional analysis of MOX fuel pellets using m-XRF and TXRF (an advanced variant of EDXRF). 2,22 In such nondestructive analysis, researchers considered the wellresolved U/Th La 1 line as a characteristic line and performed the analysis. A touchstone-based technique using TXRF yielded a relative error and precision of 5% and 2.6%, respectively.…”

“…Previously, researchers have also demonstrated a m-XRF and total reection X-ray uorescence (TXRF; an advanced variant of EDXRF) based direct, nondestructive compositional analysis technique for the analysis of MOX fuel pellets. 2,22 The methodologies followed in the previously mentioned literature studies are touchstone and disperse powder based techniques. Researchers exploited the well resolved U/Th La 1 lines (13.61 keV and 12.97 keV) for the elemental characterization of MOX for U/Th determination due to their higher uorescence yield.…”

Atomic spectrometry update: review of advances in X-ray fluorescence spectrometry and its special applications

“…Determination of the relative amounts of Th and U in mixed oxide fuels was achieved 32 by determining sensitivity from standards and by applying two thin-sample preparation techniques. In the first procedure, ca.…”