The error introduced into a water density measurement due to the presence of a water density gradient.

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dc.contributor.authorWilson, DJen_AU
dc.date.accessioned2007-11-22T04:26:53Zen_AU
dc.date.accessioned2010-04-30T04:37:55Zen_AU
dc.date.available2007-11-22T04:26:53Zen_AU
dc.date.available2010-04-30T04:37:55Zen_AU
dc.date.issued1988-08en_AU
dc.description.abstractA multigroup diffusion code has been used to calculate the thermal neutron flux resulting from a neutron source in a homogeneous soil system in which there is a linear water density gradient. A relative neutron count rate is obtained by integrating the thermal flux over the volumes of different detectors in that flux. By repeating the calculation in the same soil system containing water at a constant density equal to that pertaining to the measuring point in the gradient system the change in flux due to the gradient can be determined. The magnitude of the effect is mainly a function of the soil density the slope of the water density gradient the proximity of the gradient to the detector and the water density. The mass absorption coefficient and the mass scattering coefficient have very little influence on this effect.en_AU
dc.identifier.citationWilison, D. J. (1988). The error introduced into a water density measurement due to the presence of a water density gradient. (ANSTO/E669). Lucas Heights, NSW: Australian Nuclear Science and Technology Organisation.en_AU
dc.identifier.govdoc645en_AU
dc.identifier.isbn0642598797en_AU
dc.identifier.issn10307745en_AU
dc.identifier.otherANSTO-E-669en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/635en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectDensityen_AU
dc.subjectNeutronsen_AU
dc.subjectTransport theoryen_AU
dc.titleThe error introduced into a water density measurement due to the presence of a water density gradient.en_AU
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