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- W2304420957 abstract "A combination of resonance-enhanced photoionization and mass analysis of the resulting ions is an ultrasensitive tool for trace-species analysis. For example, isotope ratios of lutetium were accurately determined in 60 ng samples containing trace amounts of 173Lu and 174Lu and a thousand fold excess of isobaric interfering isotopes 173Yb and 174Yb [1]. 173Lu and 174Lu are rare isotopes with half-lives of 1.4 and 3.3 years. The ratio 173Lu/175Lu was measured to be (0.44 ± 0.07) × 10−6 on a sample containing only 108 atoms of 173Lu. In this work, and in most resonance-ionization mass spectrometry (RIMS), the photoionization step uses a broadband laser (FWHM 1–2 cm−1 or greater) and consequentially is element selective but not isotope selective; isotope ratios are measured by dispersion of the ions in a mass spectrometer. In order to increase the accuracy and dynamic range of isotope ratio measurements, it may be necessary to use single frequency lasers and isotopically selective photoionization. To be successful in this task it is necessary to know isotope shifts and hyperfine structure of optical transition(s) used for the isotopes of interest. We are particularly interested in rare and sometimes highly radioactive elements for which this information is not readily available." @default.
- W2304420957 created "2016-06-24" @default.
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- W2304420957 date "1985-01-01" @default.
- W2304420957 modified "2023-09-24" @default.
- W2304420957 title "High Resolution, Mass Resolved Spectra of Lutetium Isotopes" @default.
- W2304420957 cites W2157183859 @default.
- W2304420957 doi "https://doi.org/10.1007/978-3-540-39664-2_120" @default.
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