A pulsed neutron measurement in BeO and derivation of the thermal neutron diffusion parameters from the λ (B2) curve

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dc.contributor.authorRitchie, AIMen_AU
dc.date.accessioned2007-11-22T04:34:20Zen_AU
dc.date.accessioned2010-04-30T04:42:08Zen_AU
dc.date.available2007-11-22T04:34:20Zen_AU
dc.date.available2010-04-30T04:42:08Zen_AU
dc.date.issued1967-11en_AU
dc.description.abstractThe decay constant of the neutron population was measured in BeO assemblies of various sizes. Particular attention was paid to the problem of 'room return', establishment of the asymptotic mode, and the appearance of the continuous mode of decay. The best fit to the λ(B2) curve gave λa = (1.954 > 0.076) x 10 2 sec -1 Do = (1.343 + 0.011) x 10 5 sec -1 cm 2 C = (4.88 + 0.31) x 10 5 sec - 1 cm 4, for BeO density 2.96 g cm -3 at a temperature of 22oC. The parameters can be used to derive L = 26.22 + 0.51 cm λtr = 1.619 + 0.013 cm. The parameterisation of the λ(B2) curve is discussed in conjunction with the problem of deciding when agreement exists between two separate measurements.en_AU
dc.identifier.citationRitchie, A. I. M. (1967). A pulsed neutron measurement in BeO and derivation of the thermal neutron diffusion parameters from the λ (B2) curve. (AAEC/TM415). Lucas Heights, NSW: Australian Atomic Energy Commission.en_AU
dc.identifier.govdoc908en_AU
dc.identifier.otherAAEC-TM-415en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/899en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Nuclear Science and Technology Organisationen_AU
dc.subjectPulsed neutron techniquesen_AU
dc.subjectDecay instabilityen_AU
dc.subjectThermal neutronsen_AU
dc.subjectExperimental dataen_AU
dc.titleA pulsed neutron measurement in BeO and derivation of the thermal neutron diffusion parameters from the λ (B2) curveen_AU
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