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With respect to safeguards, the experiences obtained from software by applying atmospheric dispersion models developed are used to estimate the eventual position of an unknown nuclear source. In this case there is no need to have any simulation in real time, nor is there any necessity to conceive any model for distances larger than, say, 30 km. In fact these unknown sources will certainly be of low intensity, such that the concentration field deriving is just above that already present in the background at such distances.
The question that is discussed is whether it is possible, with the present techniques in atmospheric flow and dispersion modelling, to determine the position and intensity of a given unknown source from a few measurements which are assumed to be available.

Additional information

Authors: GRAZIANI G, JRC Ispra (IT)
Bibliographic Reference: Paper presented: ESARDA/INMM Workshop on Science and Modern Technology for Safeguards, Arona (IT), October 28-31, 1996
Availability: Available from (1) as Paper EN 40202 ORA
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