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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
physics and astronomy
Sensitivity of in-situ γ-ray spectra to soil density and water content
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Volume 600, No. 2, Year 2009
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Description
The effects of sediment water content and bulk density on measurements of in-situ environmental γ-radiation were investigated using Monte-Carlo simulations. The simulations consider a large bismuth-germanate detector in a semi-infinite geometry. The volume contributing radiation to the detector decreases with increasing sediment bulk density, as the detector 'sees' a constant sediment mass. The effect of variations in porosity on γ-ray spectra is negligible. Variations in water content affect the shape of the spectra only in the region below 0.1 MeV and, more importantly, strongly affect spectral intensity. Separate measurements of sediment water content, when expressed as mass fraction of water, can be used to correct spectra collected on sediments with varying water content. © 2008 Elsevier B.V. All rights reserved.
Authors & Co-Authors
de Groot, A. V.
Netherlands, Groningen
Kvi-centre for Advanced Radiation Technology
Netherlands, Groningen
Rijksuniversiteit Groningen
van der Graaf, E. R.
Netherlands, Groningen
Kvi-centre for Advanced Radiation Technology
de Meijer, Robert J.
Netherlands, Peize
Stichting Earth
South Africa, Bellville
University of the Western Cape
Maucěc, Marko M.
Netherlands, Groningen
Kvi-centre for Advanced Radiation Technology
United States, Houston
Halliburton
Statistics
Citations: 36
Authors: 4
Affiliations: 5
Identifiers
Doi:
10.1016/j.nima.2008.12.003
ISSN:
01689002
Research Areas
Cancer
Environmental