Mass spectrometry in nuclear science

Laeter, J. R. De

doi:10.1002/mas.1280070104

Cited by 19 publications

(7 citation statements)

References 129 publications

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“…Work in this field until 1988 has been reviewed by De Laeter 224 and this topic is discussed to some extent in Section 15.4.4. Work from 1988 onwards in this field is discussed briefly here.…”

Section: Metrological Applications In Nuclear Sciencementioning

confidence: 99%

Thermal Ionisation Mass Spectrometry

Bürger

Vogl

Klötzli

et al. 2014

Sector Field Mass Spectrometry for Elemental and Isotopic Analysis

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The principle of TIMS is based on the formation of atom ions on a heated filament and the separation of these ions according to their mass/charge ratio in a mass spectrometer. In general, TIMS is applied for highprecision measurements of isotope ratios. In the basic design of a modern thermal ionisation source, a surface material is used in the shape of a flat ribbon filament. Usually, a solution (separated from the matrix and containing the element of interest in high concentration) is deposited in the centre of the filament as a liquid. Applying a current to the filament will evaporate and ionise the analyte deposited on the filament. In the case of a single-filament geometry, evaporation and ionisation of the analyte is accomplished with one filament, whereas in a double filament design, evaporation and ionisation is performed on two filaments placed parallel to each other. The analyte is evaporated on one filament, with ionisation occurring when the evaporated atoms strike the ionisation filament. A magnetic sector field is used as mass separator.

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Section: Metrological Applications In Nuclear Sciencementioning

confidence: 99%

Thermal Ionisation Mass Spectrometry

Bürger

Vogl

Klötzli

et al. 2014

Sector Field Mass Spectrometry for Elemental and Isotopic Analysis

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“…The reason for this deviation is mainly due the mass discrimination effect [1], which takes place in the sample evaporation, but also in the extraction, transmission and ion detection processes. The lighter isotopes are preferentially evaporated and extracted compared with the heavier isotopes of the element.…”

Section: Introductionmentioning

confidence: 99%

“…In the classical or traditional method, the isotope ratio is changing during the measurement due to the preferential evaporation of lighter isotopes [1]. The measurement is performed in just a limited period of the sample evaporation and all parameters such as sample size, chemical form, filament material and temperature, heating pattern and analysis time should be tightly controlled to reproduce the same fractionation behaviour.…”

Section: Introductionmentioning

confidence: 99%

“…As it is experimentally extremely difficult to assess the contribution of each source of mass discrimination individually, the overall effect is accounted for using a single factor as defined below [3] K = K evap × K extr × K trans × K det (1) where K is the overall mass discrimination factor, K evap , K extr , K trans and K det are the mass discrimination factors related to the evaporation, ion extraction, ion transmission and ion detection processes, respectively. The approach to correct the mass discrimination effect using a set of isotope reference materials (IRMs) having different certified isotope amount ratios is based on the following equation [4]:…”

Section: Introductionmentioning

confidence: 99%

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Evaluation of the n(235U)/n(238U) isotope ratio measurements in a set of uranium samples by thermal ionization mass spectrometry

Junior

Bolle

Stephan

et al. 2005

International Journal of Mass Spectrometry

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“…The requirements of the nuclear energy industry are such that the isotopic composition of nuclear fuel has to be known at a number of steps in the nuclear fuel cycle. Mass spectrometry is used to characterize uranium fuels for burn-up measurements, to determine the content of plutonium in irradiated fuel elements, and to monitor nuclear fuel inventories (De Laeter, 1988). Uranium isotope abundances often have to be measured over a large dynamic range, from material depleted in 235U to enriched uranium for use in research reactors.…”

Section: Introductionmentioning

confidence: 99%