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X-ray Phase-contrast Imaging: from 10 W Tubes to GW X-ray Lasers

Dr Steve Wilkins

Manufacturing & Infrastructure Technology, CSIRO

3.30pm, Friday 29 October 2004, AR103 Seminar Room, Graduate Research Centre

Conventional X-ray radiography that has prevailed for the past 100 years or so, relies on differential absorption in a sample to produce contrast. Recently, a variety of methods for producing new or additional contrast via phase effects in images have been proposed and explored. These methods have taken advantage of the high coherence available from, for example, 3rd generation synchrotron sources and high brilliance microfocus sources. An important associated area of investigation is in the extraction of quantitative information from such X-ray images.

The present talk will briefly highlight the key features of some of these methods and present a range of results obtained using them, including biomedical and materials science applications with both synchrotrons and conventional sources. Key features of the high performance imaging beamline planned for operation at the Australian Synchrotron will be outlined, as also very briefly will some imaging possibilities for using high-power pulsed-laser X-ray sources and X-ray FEL's (as these latter come on line over the next few years).

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