期刊
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
卷 92, 期 3, 页码 511-516出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00339-008-4726-5
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We report the first infrared pump-x-ray probe study of the structural dynamics of liquid water. Femtosecond infrared excitation via the O-H stretching band induces an ultrafast temperature jump that gives rise to changes in the hydrogen bond network. Such changes are probed via the transient x-ray absorption at the oxygen K edge using 70 ps x-ray pulses from a storage ring source. We measure spectra and time evolution of the transient x-ray absorption and calibrate the absolute change of temperature. Our work paves the way for future studies with femtosecond x-ray probe pulses.
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