Browsing by Author "Dicken, Anthony"

Browsing by Author "Dicken, Anthony"

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  • Greenwood, Charlene; Clement, John; Dicken, Anthony; Evans, Paul; Lyburn, Iain Douglas; Martin, Richard M.; Stone, Nick; Zioupos, Peter; Rogers, Keith (Buck Institute for Age Research, 2017-10-11)
    Osteoporosis is a prevalent bone condition, characterised by low bone mineral density and increased fracture risk. Currently, the gold standard for identifying osteoporosis and increased fracture risk is through quantification ...
  • Dicken, Anthony; Evans, J. Paul O.; Rogers, Keith; Prokopiou, Danae; Godber, Simon; Elarnaut, F.; Shevchuk, Alex; Downes, D.; Wilson, M. (Optical Society of America, 2019-07-01)
    We introduce a new high-energy X-ray diffraction tomography technique for volumetric materials characterization. In this method, a conical shell beam is raster scanned through the samples. A central aperture optically ...
  • Spence, Daniel; Dicken, Anthony; Downes, David; Rogers, Keith; Evans, Paul (Royal Society of Chemistry, 2023-01-16)
    In many applications, the main limitation of X-ray absorption methods is that the signals measured are a function of the attenuation coefficient, which tells us almost nothing about the chemical or crystallographic nature ...
  • Dicken, Anthony (Department of Engineering and Applied Science, 2013-12-04)
    An increasing number of fields would benefit from a single analytical probe that can characterise bulk objects that vary in morphology and/or material composition. These fields include security screening, medicine and ...
  • Dicken, Anthony; Spence, Daniel; Rogers, Keith; Prokopiou, Danae; Evans, Paul (Royal Society of Chemistry, 2018-09-13)
    To retrieve crystallographic information from extended sample volumes requires a high-energy probe. The use of X-rays to combine imaging with materials characterisation is well-established. However, if fundamental ...
  • Dicken, Anthony; Knock, Clare; Beckett, Sophie; Carr, Debra J. (Elsevier, 2019-05-09)
    This paper discusses the effects of thickness, mass per unit area, sett, yarn linear density and twist of calico fabrics (100% cotton, plain woven) on the morphology of passive bloodstains. Horse blood was dropped vertically ...
  • Dicken, Anthony; Shevchuk, Alex; Rogers, Keith; Godber, Simon; Evans, Paul (Optical Society of America, 2015-02-02)
    We demonstrate material phase retrieval by linearly translating extended polycrystalline samples along the symmetry axis of an annular beam of high-energy X-rays. A series of pseudo-monochromatic diffraction images are ...
  • Prokopiou, Danae; McGovern, James; Davies, Gareth; Godber, Simon; Evans, Paul; Dicken, Anthony; Rogers, Keith (International Union of Crystallography, 2020-07-24)
    A new approach to parafocusing X-ray diffraction implemented with an annular incident beam is demonstrated for the first time. The method exploits an elliptical specimen path on a flat sample to produce relatively high ...
  • Dicken, Anthony; Rogers, Keith; Evans, Paul; Rogers, Joseph; Chan, Jer Wang; Xun, Wang (Elsevier, 2010-09-25)
    A novel diffraction sensor geometry able to provide the diffraction pattern of a suspect material without prior knowledge of the samples location is introduced. The sensor geometry can also resolve diffraction patterns ...
  • Prokopiou, Danae; Smith, Kerrie L.; Rogers, Keith; Paula, P.; Evans, Paul; Dicken, Anthony; Godber, S. (International Union of Crystallography, 2017-04-01)
    Diffraction data may be measured using approaches that lead to ambiguity in the interpretation of scattering distributions. Thus, the encoding and decoding of coherent scatter distributions have been considered with a ...
  • Greenwood, Charlene; Clement, J.; Dicken, Anthony; Evans, J.; Lyburn, Iain Douglas; Martin, R.; Rogers, Keith; Stone, N.; Zioupos, Peter (2016-09-30)
    Osteoporosis is a prevalent bone condition, characterised by low bone mass and increased fracture risk. Currently, the gold standard for identifying osteoporosis and increased fracture risk is through quantification of ...