Nageldinger, Guido, Flowers, Alan, Henry, Brian and Postauk, Julie (1998) Hot particle detection using uncertainties in activity measurements of soil. Health Physics, 74(4), pp. 472-477. ISSN (print) 0017-9078Full text not available from this archive.
The uncertainty in gamma spectroscopic activity measurements is investigated for soil containing hot particles. A radioactivity inhomogeneity uncertainty needs to be taken into account, which depends on the density of hot particles in the sample geometry, the distribution of their activities, and the specific source-detector geometry. The maximum activity error due to hot particles in our sampled Chernobyl soil with a 137Cs activity of 100 kBq kg(-1) soil was 6% for our source detector geometry. The methodology presented might have a practical application in nuclear power plants to detect hot particles in a large quantity of dust or dirt. The number of hot particles present can be estimated if the activity of all particles is assumed to be similar. With this assumption 100 g of the investigated soil sample would contain about 500 hot particles with an approximate activity of 20 Bq each.
|Uncontrolled Keywords:||spectroscopy, gamma, hot particles, soil, chernobyl|
|Faculty, School or Research Centre:||Faculty of Science (until 2011) > School of Life Sciences|
|Depositing User:||Automatic Import Agent|
|Date Deposited:||29 Mar 2010 11:41|
|Last Modified:||05 Oct 2010 10:53|
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