Optimisation of systems to locate discrete gamma-ray sources within a large search area |
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Authors: | Long S Martin L |
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Affiliation: | Australian Radiation Protection and Nuclear Safety Agency, 619 Lower Plenty Road, Yallambie 3085, Australia. stephen.long@arpansa.gov.au |
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Abstract: | Most systems used to locate discrete gamma-ray sources involve systematically passing a detector over the search area while seeking a significant increase in the observed count-rate. This paper discusses the ways in which such systems may be designed to maximise the probability of locating a source. It is shown that optimised systems use a collimated, energy-discriminating detector and overlapping counting intervals determined by the scanning geometry and speed. |
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