TY - CHAP
T1 - Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland
AU - Rasilainen, Kari
AU - Suksi, Juhani
PY - 1994
Y1 - 1994
N2 - Concentration distributions of natural decay chains 4n+2 and 4n+3 in crystalline rock intersected by a natural fracture were measured. Calcite coating on the same fracture surface was dated. Material properties of the rock matrix, and nuclide concentrations in groundwater were measured. The interpretation of the concentration distributions is based on the classical matrix diffusion concept. Although support was obtained, this calibration exercise does not yet validate the model. Besides initial and boundary conditions, matrix properties are uncertain due to the small amount of rock material. Experimental sorption data was not available, but its importance and the need for systematic studies was demonstrated.
AB - Concentration distributions of natural decay chains 4n+2 and 4n+3 in crystalline rock intersected by a natural fracture were measured. Calcite coating on the same fracture surface was dated. Material properties of the rock matrix, and nuclide concentrations in groundwater were measured. The interpretation of the concentration distributions is based on the classical matrix diffusion concept. Although support was obtained, this calibration exercise does not yet validate the model. Besides initial and boundary conditions, matrix properties are uncertain due to the small amount of rock material. Experimental sorption data was not available, but its importance and the need for systematic studies was demonstrated.
M3 - Chapter or book article
SN - 951-690-542-0
T3 - Geologian tutkimuskeskus. Tutkimusraportti
SP - 77
EP - 87
BT - The Palmottu Analogue Project, Progress Report 1993
PB - Geological Survey of Finland
T2 - 4th International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere
Y2 - 12 December 1993 through 17 December 1993
ER -