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Production, Accumulation, and Transport of Helium in the Subsurface - Possibilities and Limits for Groundwater Dating

Published online by Cambridge University Press:  10 February 2011

B.E. Lehmann ,
H.H. Loosli ,
R. Purtschert ,
J. Lippmann ,
K. Osenbruick ,
A. Rübel ,
C. Sonntag ,
I. Tolstikhin ,
I. Tokarev  and
V. Vetrin
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B.E. Lehmann
Affiliation:
Physikalisches Institut, University of Bern, Switzerland
H.H. Loosli
Affiliation:
Physikalisches Institut, University of Bern, Switzerland
R. Purtschert
Affiliation:
Physikalisches Institut, University of Bern, Switzerland
J. Lippmann
Affiliation:
Institut für Umweltphysik, University of Heidelberg, Germany
K. Osenbruick
Affiliation:
Institut für Umweltphysik, University of Heidelberg, Germany
A. Rübel
Affiliation:
Institut für Umweltphysik, University of Heidelberg, Germany
C. Sonntag
Affiliation:
Institut für Umweltphysik, University of Heidelberg, Germany
I. Tolstikhin
Affiliation:
Geological Institute, Kola Science Center, Russian Academy of Science, Apatity, and Institute of Precambrian Geology and Geochronology, St.Petersburg, Russia
I. Tokarev
Affiliation:
Geological Institute, Kola Science Center, Russian Academy of Science, Apatity, and Institute of Precambrian Geology and Geochronology, St.Petersburg, Russia
V. Vetrin
Affiliation:
Geological Institute, Kola Science Center, Russian Academy of Science, Apatity, and Institute of Precambrian Geology and Geochronology, St.Petersburg, Russia
A. Scholtis
Affiliation:
Nagra, Nationale Genossenschaft für die Lagerung radioaktiver Abfälle, Wettingen, Switzerland
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Abstract

Natural rocks are radioactive. They contain e.g. uranium and thorium and their daughter products in very small quantities and emit alpha-particles at well-defined rates. Neutralized alpha-particles are helium atoms and therefore natural rocks produce helium. The production rates are easy to calculate if the U and Th concentrations are known. In a closed system helium will accumulate with time; a measured helium concentration represents a certain accumulation time.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 506: Symposium – Scientific Basis for Nuclear Waste Management XXI , 1997 , 1057
Copyright
Copyright © Materials Research Society 1998

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