Determination of intensity ratios of Nd, Cs, Zr and Sr against U and burn-up in simulated nuclear fuels by LA-ICPMS

Abstract

Laser ablation coupled to inductively coupled plasma mass spectrometry (LA-ICPMS) is employed in spatial profiling mode to determine isotopic ratios and burn-up of simulated fast breeder reactor (FBR) fuel containing...

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

“…From literature reports 19 and our earlier experimental studies, 10 TBP is found to enhance the ionization efficiency and it is known that the formation of a metal complex having a nitrate counter ion is favoured in a methanol medium. 2 Graphite has high absorption capacity for laser radiation. Rapid heat generation from the absorbed laser energy leads to desorption/ionisation, which improves ionisation efficiency.…”

“…Samples in the form of solution were analyzed by LIBS and LIMS, whereas three different sampling methods, e.g. , direct solution, 5,10 pulsed laser deposition of solid samples followed by dissolution 11 and direct laser ablation of solid samples, 2 were employed for MC-ICPMS. Heavy elements and burn-up monitors can also be quantified using ID MC-ICPMS like ID-TIMS.…”

“…Burnup (atom percent ssion) is dened as the number of ssions per 100 initial heavy element (HE) atoms (mass > 225 amu) present in the fuel. 1,2 The most accurate method for determining burn-up is the ssion product method, where the ratio of HEs to burn-up monitor, e.g. neodymium, needs to be measured.…”