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Nanofocused x-ray p...
Nanofocused x-ray photon correlation spectroscopy
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- Berkowicz, Sharon (author)
- Stockholm University,Stockholms universitet,Fysikum
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- Das, Sudipta (author)
- Stockholm University,Stockholms universitet,Fysikum
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- Reiser, Mario (author)
- Stockholm University,Stockholms universitet,Fysikum
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- Filianina, Mariia, 1992- (author)
- Stockholm University,Stockholms universitet,Fysikum
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- Bin, Maddalena (author)
- Stockholm University,Stockholms universitet,Fysikum
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- Crevatin, Giulio (author)
- Diamond Light Source
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- Hennies, Franz (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Weninger, Clemens (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Björling, Alexander (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Bell, Paul (author)
- Lund University,Lunds universitet,MAX IV-laboratoriet,MAX IV Laboratory
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- Perakis, Fivos (author)
- Stockholm University,Stockholms universitet,Fysikum
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(creator_code:org_t)
- 2022
- 2022
- English.
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In: Physical Review Research. - 2643-1564. ; 4:3
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Abstract
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- Here, we demonstrate an experimental proof of concept for nanofocused x-ray photon correlation spectroscopy, a technique sensitive to nanoscale fluctuations present in a broad range of systems. The experiment, performed at the NanoMAX beamline at MAX IV, uses a novel event-based x-ray detector to capture nanoparticle structural dynamics with microsecond resolution. By varying the nanobeam size from σ=88 nm to σ=2.5μm, we quantify the effect of the nanofocus on the small-angle scattering lineshape and on the diffusion coefficients obtained from nano-XPCS. We observe that the use of nanobeams leads to a multifold increase in speckle contrast, which greatly improves the experimental signal-to-noise ratio, quantified from the two-time intensity correlation functions. We conclude that it is possible to account for influence of the high beam divergence on the lineshape and measured dynamics by including a convolution with the nanobeam profile in the model.
Subject headings
- NATURVETENSKAP -- Fysik -- Atom- och molekylfysik och optik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Atom and Molecular Physics and Optics (hsv//eng)
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Berkowicz, Sharo ...
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Das, Sudipta
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Reiser, Mario
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Filianina, Marii ...
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Bin, Maddalena
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Crevatin, Giulio
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show more...
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Hennies, Franz
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Weninger, Clemen ...
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Björling, Alexan ...
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Bell, Paul
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Perakis, Fivos
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- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Atom and Molecul ...
- Articles in the publication
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Physical Review ...
- By the university
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Stockholm University
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Lund University