MEASUREMENT OF THERMAL NEUTRON ABSORPTION CROSS SECTION IN SELECTED GEOCHEMICAL REFERENCE MATERIALS |
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| Authors: | P.K. HARVEY M.A. LOVELL T.S. BREWER J. LOCKE E. MANSLEY |
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| Affiliation: | Borehole Research, Department of Geology, Leicester University, LE1 7RH, U.K.;AEA Technology, Reactor Services, Winfrith, Dorchester, Dorset, DT2 8DH, U.K. |
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| Abstract: | The thermal neutron absorption cross-section () of a sample is a measure of its ability to absorb neutrons and is a linear function of its total chemistry. is measured automatically by some downhole logging tools and is an important parameter for the lithological characterisation of formations. As part of a programme to accurately determine the of lithologies commonly encountered in the Ocean Drilling Program, it was necessary to evaluate the measurement of and this was, in part, achieved by measuring on a number of geochemical reference standards. Computed and measured values are reported here for thirteen geochemical reference standards. |
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