Abstract
Results of α-particle track studies (Radiat. Meas. 25(1–4) (1995) 413; Radionuclides and Heavy metals in Environment, Vol. 5, 2001, Kluwer Academic Publisher, Dordrecht) indicate that the surface (⩽5 cm) layer of the soil in the Chernobyl Nuclear Power Plant (NPP) accident region consists of thinly dispersed radionuclides and highly-radioactive “hot” particles (HPs). The latter contain nearly 2/3rds of the total α-activity of the contaminated soil. In the present report, the new results of continued HP α-activity characteristics are presented. The chief attempt made was to investigate size–frequency vs. α-activity distribution of HPs of size fraction ⩽10– 100 μm . For the Hp-aggregates with ∼100– 1000 μm sizes, α-radio-nuclide heterogeneity was established. This is probably the result of formation of HP-aggregates during the second stage of the NPP accident process: in these HPs the presence of not only U and fission products of “fuel” origin has been revealed, but also of terrestrial matter components.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
