Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland

Kari Rasilainen, Juhani Suksi

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleScientificpeer-review

Abstract

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.
Original languageEnglish
Title of host publicationThe Palmottu Analogue Project, Progress Report 1993
Subtitle of host publicationThe behaviour of natural radionuclides in and around uranium deposits
PublisherGeological Survey of Finland
Pages77-87
ISBN (Print)951-690-542-0
Publication statusPublished - 1994
MoE publication typeA3 Part of a book or another research book
Event4th International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere - Charleston, United States
Duration: 12 Dec 199317 Dec 1993

Conference

Conference4th International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere
CountryUnited States
CityCharleston
Period12/12/9317/12/93

Fingerprint

natural analog
matrix
modeling
crystalline rock
rock
coating
boundary condition
calcite
sorption
calibration
groundwater
in situ
distribution

Cite this

Rasilainen, K., & Suksi, J. (1994). Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland. In The Palmottu Analogue Project, Progress Report 1993: The behaviour of natural radionuclides in and around uranium deposits (pp. 77-87). Geological Survey of Finland. Geologian tutkimuskeskus. Tutkimusraportti, No. GTK-YST-85
Rasilainen, Kari ; Suksi, Juhani. / Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland. The Palmottu Analogue Project, Progress Report 1993: The behaviour of natural radionuclides in and around uranium deposits. Geological Survey of Finland, 1994. pp. 77-87 (Geologian tutkimuskeskus. Tutkimusraportti; No. GTK-YST-85).
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abstract = "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.",
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Rasilainen, K & Suksi, J 1994, Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland. in The Palmottu Analogue Project, Progress Report 1993: The behaviour of natural radionuclides in and around uranium deposits. Geological Survey of Finland, Geologian tutkimuskeskus. Tutkimusraportti, no. GTK-YST-85, pp. 77-87, 4th International Conference on Chemistry and Migration Behaviour of Actinides and Fission Products in the Geosphere, Charleston, United States, 12/12/93.

Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland. / Rasilainen, Kari; Suksi, Juhani.

The Palmottu Analogue Project, Progress Report 1993: The behaviour of natural radionuclides in and around uranium deposits. Geological Survey of Finland, 1994. p. 77-87 (Geologian tutkimuskeskus. Tutkimusraportti; No. GTK-YST-85).

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleScientificpeer-review

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

SP - 77

EP - 87

BT - The Palmottu Analogue Project, Progress Report 1993

PB - Geological Survey of Finland

ER -

Rasilainen K, Suksi J. Modelling prospects for in situ matrix diffusion at Palmottu natural analogue site, SW Finland. In The Palmottu Analogue Project, Progress Report 1993: The behaviour of natural radionuclides in and around uranium deposits. Geological Survey of Finland. 1994. p. 77-87. (Geologian tutkimuskeskus. Tutkimusraportti; No. GTK-YST-85).