کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1739303 | 1016843 | 2008 | 10 صفحه PDF | دانلود رایگان |

Ratios of the fission products 135Cs and 137Cs were determined in soil and sediment samples contaminated from three different sources, to assess the use of 135Cs/137Cs as an indicator of source of radioactive contamination. Soil samples from the Chernobyl exclusion zone were found to have to be heavily depleted in 135Cs (135Cs/137Cs ∼ 0.45), indicative of a high thermal neutron flux at the source. Sludge samples from a nuclear waste treatment pond were found to have a 135Cs/137Cs ratio of ∼1, whereas sediment collected downstream from a nuclear reactor was highly variable in both 137Cs activity and 135Cs/137Cs ratio. Comparison of these preliminary results of variability in radiocaesium isotope ratios with reports of Pu isotope ratios suggests 135Cs/137Cs similarly varies with fuel and reactor conditions, and may be used to corroborate other methods of characterizing radioactive contamination.
Journal: Journal of Environmental Radioactivity - Volume 99, Issue 1, January 2008, Pages 109–118