Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases
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Beschreibung
This work studies the relaxation dynamics of molecules in both the gas and liquid phases after strong field ionization, using transient absorption in the soft X-rays. In particular, the thesis presents the first realization of time-resolved X-ray absorption spectroscopy in the spectral water window with a laser-based HHG source. These remarkable experiments were not only performed for isolated molecules, but also in liquids, for which the spectral coverage of the K-edges of C, N, and O are of primary importance for investigating biological molecules. The technique relies on the generation of high-order harmonics to further probe the electronic structure of molecules. Using the atomic selectivity of high energies and the temporal coherence of laser technology, we demonstrate the observation of the first stages of chemical transformation of matter in the gas and liquid phases.
This work studies the relaxation dynamics of molecules in both the gas and liquid phases after strong field ionization, using transient absorption in the soft X-rays. In particular, the thesis presents the first realization of time-resolved X-ray absorption spectroscopy in the spectral water window with a laser-based HHG source. These remarkable experiments were not only performed for isolated molecules, but also in liquids, for which the spectral coverage of the K-edges of C, N, and O are of primary importance for investigating biological molecules. The technique relies on the generation of high-order harmonics to further probe the electronic structure of molecules. Using the atomic selectivity of high energies and the temporal coherence of laser technology, we demonstrate the observation of the first stages of chemical transformation of matter in the gas and liquid phases.
Nominated as an outstanding Ph.D. thesis by the University of Geneva, Geneva, Switzerland Presents essential progress for the investigation of bio-molecules Includes outstanding advances in molecular dynamics
Autor*in
Cédric Schmidt
Themen in »Time-Resolved Soft X-Ray Absorption Spectroscopy of Molecules in the Gas and Liquid Phases«
High-Harmonic Generation Time Resolved Spectroscopy Liquid Phase Investigation Gas Phase Investigation Molecular Dynamics Transient Absorption Experiment Ultrashort Femtosecond Experiement Ultrafast Dissociation Attosecond Ionization of Molecule Strong Field Ionization Water Window Relaxation dynamics of biomolecules time resolved molecular transformation time-resolved molecular chemistry