By Richard B Firestone; Andrej Trkov; Lawrence Berkeley National Laboratory.; United States. Dept. of Energy. Office of Scientific and Technical Information.; USDOE Director. Office of Science. NuclearPhysicsInternational Atomic Energy Agency; All authors

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Detection limits The detection limit represents the ability of a given NAA procedure to determine the minimum amounts of an element reliably. The detection limit depends on the irradiation, the decay and the counting conditions. It also depends on the interference situation including such things as the ambient background, the Compton continuum from higher energy C-rays, as well as any C-ray spectrum interferences from such factors as the blank from pre-irradiation treatment and from packing materials.

No doubt, the NAA has played a very important role in science and technology, especially at its early development stage as a unique analytical arsenal characteristic of nuclear properties. Its extremely high sensitivity for most elements in the periodical table, good accuracy and precision, non-destructiveness, less matrix effect and multi-elemental analysis ability, etc. g. activable stable isotope tracing, in vivo analysis, fine solid particle (cosmic dust and atmospheric aerosol) analysis, etc.

In this paper its features, methodology and limitation will be outlined. In the meantime, some practical MAA examples recently performed in our laboratory will be presented as well. 2. g. high sensitivity, good accuracy and precision, small sampling amount and multi-elemental analysis ability, etc. During analytical process, it is easier for MAA to keep the original chemical species of elements unchanged than for other non-nuclear methods. In some cases the MAA is even a sole choice to do speciation analysis.

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Summary Report : First Research Coordination Meeting on by Richard B Firestone; Andrej Trkov; Lawrence Berkeley
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