Measurement of thermal neutron waves at high frequencies in BeO

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dc.contributor.authorRitchie, AIMen_AU
dc.contributor.authorWhittlestone, Sen_AU
dc.date.accessioned2007-11-22T04:34:14Zen_AU
dc.date.accessioned2010-04-30T04:42:04Zen_AU
dc.date.available2007-11-22T04:34:14Zen_AU
dc.date.available2010-04-30T04:42:04Zen_AU
dc.date.issued1972-03en_AU
dc.description.abstractThe amplitudes and phases of neutron waves have been measured in a BeO assembly in the frequency range 515.7 Hz. The results confirm earlier measurements that below ~ 520 Hz the neutron wave has the properties of a discrete mode of propagation. At frequencies > 720 Hz the attenuation α(z) and phase shift parameters ζ(z) change with distance from the source, the change being more marked the higher the frequency. The observed spatial variations of α(z) and ζ(z) do not agree with present theoretical predictions. Interference effects predicted by theory have not been observed.en_AU
dc.identifier.citationRitchie, A. I. M., & Whittlestone, S. (1972). Measurement of thermal neutron waves at high frequencies in BeO. (AAEC/TM617). Lucas Heights, NSW: Australian Atomic Energy Commission.en_AU
dc.identifier.govdoc903en_AU
dc.identifier.isbn0642994536en_AU
dc.identifier.otherAAEC-TM-617en_AU
dc.identifier.placeofpublicationLucas Heights, New South Walesen_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/894en_AU
dc.language.isoen_auen_AU
dc.publisherAustralian Atomic Energy Commissionen_AU
dc.subjectThermal neutronsen_AU
dc.subjectNeutron transport theoryen_AU
dc.subjectSpatial distributionen_AU
dc.subjectPhase shiften_AU
dc.subjectWave propagationen_AU
dc.titleMeasurement of thermal neutron waves at high frequencies in BeOen_AU
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