A novel X-ray diffractometer for studies of liquid–liquid interfaces
| Autor: | Matthais Greve, J. Stettner, Annika Elsen, Benjamin Runge, Oliver H. Seeck, Olaf M. Magnussen, Bridget M. Murphy, C. T. Koops |
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| Rok vydání: | 2013 |
| Předmět: |
Surface (mathematics)
Nuclear and High Energy Physics Range (particle radiation) Radiation Materials science Scattering business.industry Position and momentum space Equipment Design law.invention Optics X-Ray Diffraction law Scattering Radiation business Absorption (electromagnetic radiation) Instrumentation Normal Diffractometer Monochromator |
| Zdroj: | Journal of Synchrotron Radiation. 21:45-56 |
| ISSN: | 1600-5775 |
| DOI: | 10.1107/s1600577513026192 |
| Popis: | The study of liquid–liquid interfaces with X-ray scattering methods requires special instrumental considerations. A dedicated liquid surface diffractometer employing a tilting double-crystal monochromator in Bragg geometry has been designed. This diffractometer allows reflectivity and grazing-incidence scattering measurements of an immobile mechanically completely decoupled liquid sample, providing high mechanical stability. The available energy range is from 6.4 to 29.4 keV, covering many important absorption edges. The instrument provides access in momentum space out to 2.54 Å−1in the surface normal and out to 14.8 Å−1in the in-plane direction at 29.4 keV. Owing to its modular design the diffractometer is also suitable for heavy apparatus such as vacuum chambers. The instrument performance is described and examples of X-ray reflectivity studies performed underin situelectrochemical control and on biochemical model systems are given. |
| Databáze: | OpenAIRE |
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