The migration behavior of 99Tc in natural single fracture granite media
Creators
- 1. Beijing research institute of uranium geology, Beijing (China)
- 2. Department of technicla physic, Peking university, Beijing (China)
Description
The migration behavior of 99Tc in natural single fractured granite media has been studied on a laboratory scale. A mathematical model is presented for numerical simulation of nuclide transport in natural single fractured granite media and solved by the Galerkin finite-element method. The main character of this paper lies in simulating two-dimension question by one-dimension model. The calculated concentration profile in the granite media and the break-through curves are in agreement with those experimentally measured and analytically calculated. Compared to actinide series and their daughters, the dose contribution of the 99Tc is much more, due to its long half life, t1/2=2.13E+5 yr.. It is an important radiation dangerous to human being [Liu Yuanfang, 1990]. And 99Tc was considered as one of the key nuclides in the studies of performance assessment of a geological repository. In this paper numerical simulation is combined with laboratory experiments in order to study migration behavior of nuclides in the natural single fractured granite media. (author)
Additional details
Publishing Information
- Publisher
- Atomic Energy Press
- Imprint Place
- Beijing (China)
- ISBN
- 7-5022-3173-0
- Imprint Title
- The progress report of geological disposal of high level radioactive waste in China in the past ten years
- Imprint Pagination
- 493 p.
- Journal Page Range
- p. 262-271
INIS
- Country of Publication
- China
- Country of Input or Organization
- China
- INIS RN
- 43088403
- Subject category
- S54: ENVIRONMENTAL SCIENCES; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Descriptors DEI
- COMPUTERIZED SIMULATION; DIAGRAMS; FINITE ELEMENT METHOD; GEOLOGIC FRACTURES; GRANITES; HALF-LIFE; MATHEMATICAL MODELS; RADIONUCLIDE MIGRATION; TECHNETIUM 99
- Descriptors DEC
- BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; CALCULATION METHODS; ENVIRONMENTAL TRANSPORT; GEOLOGIC STRUCTURES; HOURS LIVING RADIOISOTOPES; IGNEOUS ROCKS; INFORMATION; INTERMEDIATE MASS NUCLEI; INTERNAL CONVERSION RADIOISOTOPES; ISOMERIC TRANSITION ISOTOPES; ISOTOPES; MASS TRANSFER; MATHEMATICAL SOLUTIONS; NUCLEI; NUMERICAL SOLUTION; ODD-EVEN NUCLEI; PLUTONIC ROCKS; RADIOISOTOPES; ROCKS; SIMULATION; TECHNETIUM ISOTOPES; YEARS LIVING RADIOISOTOPES
Optional Information
- Notes
- 10 figs., 2 tabs., 10 refs.