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High-resolution resonant inelastic soft X-ray scattering applied to liquids
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Molecular and condensed matter physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy.
2013 (English)In: Journal of Electron Spectroscopy and Related Phenomena, ISSN 0368-2048, E-ISSN 1873-2526, Vol. 188, no SI, 79-83 p.Article in journal (Refereed) Published
Abstract [en]

The brilliance of modern synchrotron radiation sources and capabilities of new instrumentation facilitate resonant inelastic soft X-ray scattering of liquids and molecular materials with high spectral quality. Especially, when the energy resolution approaches the natural line widths a detailed analysis provides information about local potential surfaces, dynamic coupling between nuclear and electronic degrees of freedom, and intermolecular interactions. After briefly commenting on various sample handling systems we review the recent high-resolution RIXS results on liquid acetone. The experimental RIXS spectra excited at the 0 K edge demonstrate that the CO stretching mode dominates the vibrational progressions, and that softer modes are little affected by the nuclear dynamics in the intermediate state. It is shown that intermolecular coupling can be neglected in this specific case, and it is predicted that such interaction significantly broadens spectral features in liquids with larger dipole-dipole interaction. Analysis of the data further shows that initial state thermal excitations at room temperature have a noticeable influence on the spectral features.

Place, publisher, year, edition, pages
2013. Vol. 188, no SI, 79-83 p.
Keyword [en]
RIXS, Liquids, Vibrations, High-resolution
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:uu:diva-208676DOI: 10.1016/j.elspec.2013.01.012ISI: 000324008900012OAI: oai:DiVA.org:uu-208676DiVA: diva2:653907
Available from: 2013-10-07 Created: 2013-10-07 Last updated: 2017-12-06Bibliographically approved

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Rubensson, Jan-Erik

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