caa a22 4500 465732356 CHVBK 20180323111745.0 cr unu---uuuuu 170327e19900801xx s 000 0 eng 10.1007/BF02035792 doi (NATIONALLICENCE)springer-10.1007/BF02035792 Analysis of gamma-radioactivity of "hot particles” released after the Chernobyl accident [Elektronische Daten] II. An interpretation [P. Jaracz, E. Piasecki, S. Mirowski, Z. Wilhelmi] The radionuclide fractionation process in "fuel-like” hot particles from the fallout after the Chernobyl accident is analyzed. Some processes which can be responsible for different kinds of fractionation of fission products in hot particles and nuclear fuel are suggested. These comprise: evaporation (Cs and Ru), thermal diffusion within fuel rods (visible mostly in Ce) and "half-life effects”, influencing the spatial dependence of relative content of isotopes of the same element (Ce and Ru). The analysis proves the local origin of hot particles, i.e. the absence of considerable mixing between fission products from different parts of the reactor in the process of hot particle formation. Akadémiai Kiadó, 1990 Jaracz P. Institute of Experimental Physics, Warsaw University, 69 Hoża, 00-681, Warsaw, Poland aut Piasecki E. Institute of Experimental Physics, Warsaw University, 69 Hoża, 00-681, Warsaw, Poland aut Mirowski S. Institute of Experimental Physics, Warsaw University, 69 Hoża, 00-681, Warsaw, Poland aut Wilhelmi Z. Institute of Experimental Physics, Warsaw University, 69 Hoża, 00-681, Warsaw, Poland aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 141/2(1990-08-01), 243-259 0236-5731 141:2<243 1990 141 10967 https://doi.org/10.1007/BF02035792 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02035792 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jaracz P. Institute of Experimental Physics, Warsaw University, 69 Hoża, 00-681, Warsaw, Poland aut NATIONALLICENCE 700 1- Piasecki E. Institute of Experimental Physics, Warsaw University, 69 Hoża, 00-681, Warsaw, Poland aut NATIONALLICENCE 700 1- Mirowski S. Institute of Experimental Physics, Warsaw University, 69 Hoża, 00-681, Warsaw, Poland aut NATIONALLICENCE 700 1- Wilhelmi Z. Institute of Experimental Physics, Warsaw University, 69 Hoża, 00-681, Warsaw, Poland aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 141/2(1990-08-01), 243-259 0236-5731 141:2<243 1990 141 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer