Published 1995
| Version v1
Book
U series concentration distribution around rock fractures -- Qualitative indication of matrix diffusion
- 1. Univ. of Helsinki (Finland). Dept. of Radiochemistry
- 2. Geological Survey of Finland, Espoo (Finland)
Description
Concentrations of U series nuclides (238U, 234U, 230Th, 226Ra and 231Pa) across secondary U accumulations in rock matrix around water-carrying fractures were examined to find records of radionuclide movement. The accumulations, loaded in rock pores, were separated without dissolving the host rock. The concentration profiles observed, form patterns which point to both old and young U accumulations and, moreover, post accumulation movement of certain radionuclides. In the case of the young U accumulation, shown to have occurred between 10,000 and 33,000 years ago, the apparent diffusivity of Da = 6 x 10-15 m2/s for U could be calculated
Additional details
Publishing Information
- Publisher
- Materials Research Society.
- Imprint Place
- Pittsburgh, PA (United States)
- ISBN
- 1-55899-253-7
- Imprint Title
- Scientific basis for nuclear waste management 18. Part 1
- Imprint Pagination
- 787 p.
- Series
- Materials Research Society symposium proceedings, Volume 353.
- Journal Page Range
- p. 441-448.
Conference
- Title
- 18. international symposium on the scientific basis for nuclear waste management.
- Dates
- 23-27 Oct 1994.
- Place
- Kyoto (Japan).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 28004976
- Subject category
- S61: RADIATION PROTECTION AND DOSIMETRY; S12: MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AGE DEPENDENCE; DRILL CORES; GEOLOGIC FRACTURES; GROUND WATER; NATURAL RADIOACTIVITY; PROTACTINIUM 231; RADIOACTIVE WASTE DISPOSAL; RADIOACTIVE WASTE FACILITIES; RADIOECOLOGICAL CONCENTRATION; RADIONUCLIDE MIGRATION; RADIUM 226; ROCK-FLUID INTERACTIONS; THORIUM 230; UNDERGROUND DISPOSAL; URANIUM DEPOSITS; URANIUM 234; URANIUM 238
- Descriptors DEC
- ACTINIDE NUCLEI; ALPHA DECAY RADIOISOTOPES; CARBON 14 DECAY RADIOISOTOPES; ECOLOGICAL CONCENTRATION; ENVIRONMENTAL TRANSPORT; EVEN-EVEN NUCLEI; GEOLOGIC DEPOSITS; GEOLOGIC STRUCTURES; HEAVY ION DECAY RADIOISOTOPES; HEAVY NUCLEI; HYDROGEN COMPOUNDS; ISOTOPES; MAGNESIUM 28 DECAY RADIOISOTOPES; MANAGEMENT; MASS TRANSFER; NEON 24 DECAY RADIOISOTOPES; NUCLEAR FACILITIES; NUCLEI; ODD-EVEN NUCLEI; OXYGEN COMPOUNDS; PROTACTINIUM ISOTOPES; RADIOACTIVITY; RADIOISOTOPES; RADIUM ISOTOPES; SPONTANEOUS FISSION RADIOISOTOPES; THORIUM ISOTOPES; URANIUM ISOTOPES; WASTE DISPOSAL; WASTE MANAGEMENT; WATER; YEARS LIVING RADIOISOTOPES
Optional Information
- Secondary number(s)
- CONF-941075--.