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24 April 1998 Ultrafast x-ray diffraction theory: time-scale considerations
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Abstract
The dynamics induced in matter by a short optical pump pulse can be measured by time-resolved x-ray diffraction without resorting to additional and often unknown information as required in optical pump and probe experiments. Several theoretical aspects of such measurements are considered here: elastic versus inelastic scattering, quantum interference among electronic states, physical implications of temporal- and spatial-averaging, and the coherence of x- ray beams. Based on these considerations, it is possible to use inelastic scattering for studying curve crossing in molecular systems and electronic coherence in electronic materials, in addition to probing nuclear dynamics on an excited potential energy surface. With certain modifications, the time-dependent analysis presented here can be extended to other experimental methods including electron diffraction and x-ray absorption.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Jianshu Cao and Kent R. Wilson "Ultrafast x-ray diffraction theory: time-scale considerations", Proc. SPIE 3273, Laser Techniques for Condensed-Phase and Biological Systems, (24 April 1998); https://doi.org/10.1117/12.306131
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