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New materials for Radiation imaging

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dc.contributor.author Appleby, Graham Arthur
dc.date.accessioned 2010-11-21T20:53:38Z
dc.date.accessioned 2022-10-17T22:10:45Z
dc.date.available 2010-11-21T20:53:38Z
dc.date.available 2022-10-17T22:10:45Z
dc.date.copyright 2006
dc.date.issued 2006
dc.identifier.uri https://ir.wgtn.ac.nz/handle/123456789/22120
dc.description.abstract The design, characterisation and development of new storage phosphors underpins new high-resolution imaging plates for medical radiography, security and non-destructive testing This thesis describes an experimental study of the properties of materials with potential application in x-ray and thermal neutron imaging plates based on the storage phosphor principle. The properties of known x-ray storage phosphors are first reviewed to background the investigation of new crystalline and glass-ceramic storage phosphors discussed later. An important property of storage phosphors is the depths of electron and hole traps, and a description is given of the design and development of a thermoluminescence spectrometer to measure trap depth. The structure and luminescence of the family of cubic x-ray storage phosphors MxBayXz:Eu2+ (M = Cs or Rb; X = Br or Cl) has been studied and it has been found that Rb2BaCl4:Eu2+, F- has the most promising storage phosphor characteristics. Finally, new thermal neutron storage phosphors are reported which are based on nanocrystallites of BaC12:Eu2+ or BaBr2:Eu2+ storage phosphors contained in a neutron sensitive lithium borate glass matrix. The BaCl2:Eu2+ based glass-ceramics are thermal neutron imaging plates with high neutron sensitivity, low Ƴ-sensitivity, little neutron activation and show potential for higher spatial resolution than commercial neutron imaging plates. en_NZ
dc.format pdf en_NZ
dc.language en_NZ
dc.language.iso en_NZ
dc.publisher Te Herenga Waka—Victoria University of Wellington en_NZ
dc.title New materials for Radiation imaging en_NZ
dc.type Text en_NZ
vuwschema.type.vuw Awarded Research Masters Thesis en_NZ
thesis.degree.discipline Physics en_NZ
thesis.degree.grantor Te Herenga Waka—Victoria University of Wellington en_NZ
thesis.degree.level Masters en_NZ


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