Spectroscopic analysis of radioactive strontium with low isotopic abundance using laser resonance ionization

Iwata, Y.; Cheon, Donguk; Miyabe, Masabumi; Hasegawa, Shuichi

doi:10.1007/s10751-020-1700-x

Cited by 3 publications

(1 citation statement)

References 9 publications

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“…The data of Table 2 shows no significant fractionations. Estimates of the 90 Sr transition isotope shifts relative to 88 Sr are consistently much less than 1 GHz 49,50 . In particular, Lorenzen 34 showed that the transition isotope shift for the 5s 2 ( 1 S 0 ) → 5s5p( 1 P 1 ) transition used in this work is mass-dependent with a proportionality constant of ~ 0.06 GHz/amu.…”

Section: Measurementsmentioning

confidence: 85%

Simultaneous isotopic analysis of fission product Sr, Mo, and Ru in spent nuclear fuel particles by resonance ionization mass spectrometry

Savina

Isselhardt

Shulaker

et al. 2023

Sci Rep

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Fission product Sr, Mo, and Ru isotopes in six 10-μm particles of spent fuel from a pressurized water reactor were analyzed by resonance ionization mass spectrometry (RIMS) and evaluated for utility in nuclear material characterization. Previous measurements on these same samples showed widely varying U, Pu, and Am isotopic compositions owing to the samples’ differing irradiation environments within the reactor. This is also seen in Mo and Ru isotopes, which have the added complication of exsolution from the UO2 fuel matrix. This variability is a hindrance to interpreting data from a collection of particles with incomplete provenance since it is not always possible to assign particles to the same batch of fuel based on isotopic analyses alone. In contrast, the measured 90Sr/88Sr ratios were indistinguishable across all samples. Strontium isotopic analysis can therefore be used to connect samples with otherwise disparate isotopic compositions, allowing them to be grouped appropriately for interpretation. Strontium isotopic analysis also provides a robust chronometer for determining the time since fuel irradiation. Because of the very high sensitivity of RIMS, only a small fraction of material in each of the 10 μm samples was consumed, leaving the vast majority still available for other analyses.

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Section: Measurementsmentioning

confidence: 85%