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Abstract

The flux of environmental neutrons is being studied by activation of metal discs of selected elements. Near the earth's surface the total neutron flux is in the order of 10-2 CM 2s-1, which gives induced activities of a few mBq in the discs. Initial results from this technique, involving activation at ground level for several materials (W, Au, Ta, In, Re, Sm, Dy and Mn) and ultra low-level x-ray spectrometry in an underground laboratory located at 500 m.w.e., are presented. Diffusion of environmental neutrons in water is also measured by activation of gold at different depths.

Additional information

Authors: CANET M J M, EC-JRC-IRMM, Retieweg, B-2440 Geel, Belgium;HULT M, EC-JRC-IRMM, Retieweg, B-2440 Geel, Belgium;KOEHLER M, VKTA, Rossendorf, PF 510119, D-01314 Dresden, Germany;JOHNSTON P N, Department of applied Physics, RMIT, G.P.O Box 2476V Melbourne 3001, Australia
Bibliographic Reference: Article: Applied Radiation and Isotopes 52 (2000) pp 711-716
Availability: Elsevier`s website www.elsevier.com/locate/apradiso
Record Number: 200012018 / Last updated on: 2000-06-05
Category: PUBLICATION
Original language: en
Available languages: en