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Observation of correlated X-ray scattering at atomic resolution
Stockholm University, Faculty of Science, Department of Physics. SLAC National Accelerator Laboratory, USA.
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2014 (English)In: Philosophical Transactions of the Royal Society of London. Biological Sciences, ISSN 0962-8436, Vol. 369, no 1647, 20130315- p.Article in journal (Refereed) Published
Abstract [en]

Tools to study disordered systems with local structural order, such as proteins in solution, remain limited. Such understanding is essential for e. g. rational drug design. Correlated X-ray scattering (CXS) has recently attracted new interest as a way to leverage next-generation light sources to study such disordered matter. The CXS experiment measures angular correlations of the intensity caused by the scattering of X-rays from an ensemble of identical particles, with disordered orientation and position. Averaging over 15 496 snapshot images obtained by exposing a sample of silver nanoparticles in solution to a micro-focused synchrotron radiation beam, we report on experimental efforts to obtain CXS signal from an ensemble in three dimensions. A correlation function was measured at wide angles corresponding to atomic resolution that matches theoretical predictions. These preliminary results suggest that other CXS experiments on disordered ensembles-such as proteins in solution-may be feasible in the future.

Place, publisher, year, edition, pages
2014. Vol. 369, no 1647, 20130315- p.
Keyword [en]
X-ray angular correlations, Bragg peak correlations, silver nanoparticles, atomic resolution X-ray scattering, synchrotron radiation, solution ensemble
National Category
Physical Sciences
URN: urn:nbn:se:su:diva-106184DOI: 10.1098/rstb.2013.0315ISI: 000337367600005OAI: diva2:735607


Available from: 2014-07-29 Created: 2014-07-28 Last updated: 2014-07-31Bibliographically approved

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Sellberg, Jonas
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