Rate equation model of laser induced bias in uranium isotope ratios measured by resonance ionization mass spectrometry
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چکیده
منابع مشابه
Rate equation model of laser induced bias in uranium isotope ratios measured by resonance ionization mass spectrometry
Resonance Ionization Mass Spectrometry (RIMS) has been developed as a method to measure uranium isotope abundances. In this approach, RIMS is used as an element-selective ionization process between uranium atoms and potential isobars without the aid of chemical purification and separation. The use of broad bandwidth lasers with automated feedback control of wavelength was applied to the measure...
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The determination of isotopic ratios by Resonance Ionization Mass Spectrometry (RIMS) requires a thorough characterisation of laser induced isotope effects. Besides the widely discussed odd-even effects (Fairbanks et al.l989,Lambropoulos et al.1989, Payne et al. 1991, Wunderlich et al 1992 a,b) there have also been reports of laser induced shifts in even-even isotopic ratios (Joung et al., 1990...
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A natural uranium silicate mineral, cuprosklodowskite, has been analyzed by Resonance Ionization Mass Spectrometry (RIMS) for uranium isotope composition under a variety of experimental conditions. While no significant isobaric interferences are observed in the mass regions of interest, molecular supression is incomplete, and varies with the method of neutral U atom production. Despite low meas...
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Pulsed-laser desorption is used as a means of volatilizing nucleosides into the gas phase for entrainment into a supersonic jet expansion. These species are then studied in a time-of-flight mass spectrometer by resonance enhanced multiphoton ionization. Using this combination of techniques either relatively soft ionization or controlled fragmentation can be produced. The degree of molecular ion...
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ژورنال
عنوان ژورنال: Journal of Analytical Atomic Spectrometry
سال: 2016
ISSN: 0267-9477,1364-5544
DOI: 10.1039/c5ja00249d