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) 0017-9078
Full text not available from this archive.Abstract
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.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | spectroscopy, gamma, hot particles, soil, chernobyl |
| Research Area: | Physics |
| 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 |
| URI: | http://eprints.kingston.ac.uk/id/eprint/7293 |
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