Diffusion measurements on crystalline rock matrix

Kari Hartikainen, Aimo Hautojärvi, Heikki Pietarila, Jussi Timonen

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

9 Citations (Scopus)

Abstract

A new gas flow technique is introduced such that experiments on very long samples are possible. This new technique together with increased accuracy of the measurements, allows the observation of power law tails in the break-through curves. Dispersion in these experiments can be controlled in great detail, and therefore the power law tails can be used to determine very accurately the parameters relevant in matrix diffusion. Results for rock and metal samples are shown, and they are fitted with model calculations which include both dispersion and matrix diffusion. The introduced technique, which is designed for ordinary drill cores, is suitable for scanning a large number of samples in a very short time.
Original languageEnglish
Title of host publicationScientific Basis for Nuclear Waste Management XVIII
EditorsTakashi Murakami, Rodney C. Ewing
Place of PublicationPittsburgh
PublisherMaterials Research Society
Pages435-440
DOIs
Publication statusPublished - 1995
MoE publication typeA4 Article in a conference publication

Publication series

SeriesMaterials Research Society Symposia Proceedings
Volume353
ISSN0272-9172

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