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AbstractAbstract
[en] A mathematical model is described which enables calculation of the rates of removal of nuclide ions from high level nuclear waste by groundwater flow. The model, which is incorporated into a computer code, DREG, takes into account release of the nuclides by dissolution from their stabilising matrix, the solubility of each nuclide and where several isotopes of the same element are present, the sharing amongst them of the water's total solution capacity for that element. A running mass balance, which includes the effects of chain-decay is built into the code. Examples are given of the use of the model in conjunction with a selection of fission products and the four actinide decay chains. (author)
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Source
Feb 1985; 59 p; Available from Nagra, CH-5401 Baden, Switzerland
Record Type
Report
Literature Type
Numerical Data
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BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, CESIUM ISOTOPES, COMPUTER CODES, DATA, ELECTRON CAPTURE RADIOISOTOPES, ELEMENTS, ENVIRONMENTAL TRANSPORT, EVEN-EVEN NUCLEI, EVEN-ODD NUCLEI, HOURS LIVING RADIOISOTOPES, HYDROGEN COMPOUNDS, INFORMATION, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, MANAGEMENT, MASS TRANSFER, MATERIALS, METALS, MINUTES LIVING RADIOISOTOPES, NICKEL ISOTOPES, NUCLEI, NUMERICAL DATA, ODD-EVEN NUCLEI, OXYGEN COMPOUNDS, PALLADIUM ISOTOPES, POLAR SOLVENTS, RADIOACTIVE MATERIALS, RADIOACTIVE WASTES, RADIOISOTOPES, SECONDS LIVING RADIOISOTOPES, SELENIUM ISOTOPES, SOLVENTS, TECHNETIUM ISOTOPES, TIN ISOTOPES, WASTE DISPOSAL, WASTE MANAGEMENT, WASTES, WATER, YEARS LIVING RADIOISOTOPES
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