| Autor: |
Jo W, Rysov R, Westermeier F, Walther M, Müller L, Philippi-Kobs A, Riepp M, Marotzke S, Lokteva I, Sprung M, Grübel G, Roseker W |
| Jazyk: |
angličtina |
| Zdroj: |
Optics letters [Opt Lett] 2022 Jan 15; Vol. 47 (2), pp. 293-296. |
| DOI: |
10.1364/OL.444190 |
| Abstrakt: |
Three-dimensional photon correlation spectroscopy (3D PCS) is a well-known technique developed to suppress multiple scattering contributions in correlation functions, which are inevitably involved when an optical laser is employed to investigate dynamics in a turbid system. Here, we demonstrate a proof-of-principle study of 3D PCS in the hard X-ray regime. We employ an X-ray optical cross-correlator to measure the dynamics of silica colloidal nanoparticles dispersed in polypropylene glycol. The obtained cross correlation functions show very good agreement with auto-correlation measurements. This demonstration provides the foundation for X-ray speckle-based studies of very densely packed soft matter systems. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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