Berlin 2012 – wissenschaftliches Programm
Bereiche | Tage | Auswahl | Suche | Aktualisierungen | Downloads | Hilfe
O: Fachverband Oberflächenphysik
O 57: Solid / liquid interfaces II
O 57.7: Vortrag
Mittwoch, 28. März 2012, 18:15–18:30, A 060
Diffuse scattering of Hg-electrolyte interface — •Benjamin Runge1, Annika Elsen1, Sven Festersen1, Moshe Deutsch2, Oliver H. Seeck3, Olaf M. Magnussen1, and Bridget M. Murphy1 — 1Institute for Experimental and Applied Physics, CAU, Kiel, Germany — 2PETRA III, DESY, Hamburg, Germany — 3PD, Bar-Ilan University, Ramat-Gan, Israel
Surface x-ray scattering methods belong to the very few experimental approaches that allow access to data on the nano-scale structure of liquid surfaces and in particular liquid-liquid interfaces. Here first x-ray diffuse scattering studies of a liquid-liquid interface are presented for the case of an interface between liquid Hg and electrolyte solutions. By these studies the lateral correlations caused by surface capillary waves were investigated. The measurements were carried out at the new liquid interface scattering apparatus (LISA) at the high resolution X-ray diffraction beam line P08 at the PETRA III synchrotron radiation source. Previous x-ray reflectivity studies [1] revealed a dependence of the interface width on the applied potential, not consistent with capillary wave theory. The diffuse scattering studies focus on obtaining further insight into the origin of this dependence and on the effect of the potential on the capillary waves.
[1] A. Elsen, et al., Phys. Rev. Lett., 104. 105501 (2010)