Neutron moisture probes: the minimum error attainable.

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dc.contributor.authorWilson, DJen_AU
dc.date.accessioned2007-11-22T04:29:44Zen_AU
dc.date.accessioned2010-04-30T04:39:44Zen_AU
dc.date.available2007-11-22T04:29:44Zen_AU
dc.date.available2010-04-30T04:39:44Zen_AU
dc.date.issued1987-04en_AU
dc.description.abstractThe effect of the soil parameters dry density mass absorption and mass scattering coefficients on the neutron flux at the detector of a neutron moisture probe has been described previously by a set of polynomial equations. The partial derivatives of these equations have been used to determine the deviation introduced into water density calculation by a one per cent inaccuracy in each of the parameters. Accuracy of measurement of the soil parameters is discussed and applied to a typical soil at various water densities. The accuracy to which soil parameters can be measured is examined and found to be approximately +- 2% for the dry soil density +- 1% for the mass absorption coefficient and +- 2% for the mass scattering coefficient. Using these data together with a statistical accuracy of +- 1% in the probe count rate the minimum error achievable for the water density varies between +- 3.5% at a water density of 0.06 g cm - 3 and +- 1.55% at a water density of 0.41 g cm - 3.en_AU
dc.identifier.citationWilson, D. J. (1987). Neutron moisture probes: the minimum error attainable. (AAEC/E651). Lucas Heights, N.S.W.: Research Establishment, Australian Atomic Energy Commission.en_AU
dc.identifier.govdoc758en_AU
dc.identifier.isbn0642598703en_AU
dc.identifier.otherAAEC-E-651en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/748en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectNeutron fluxen_AU
dc.subjectMoisture gagesen_AU
dc.subjectNeutronsen_AU
dc.subjectSoilsen_AU
dc.subjectWateren_AU
dc.titleNeutron moisture probes: the minimum error attainable.en_AU
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