Ultrafast x-ray diffraction theory: time-scale considerations

Jianshu Cao; Kent R. Wilson

doi:10.1117/12.306131

24 April 1998 Ultrafast x-ray diffraction theory: time-scale considerations

Jianshu Cao, Kent R. Wilson

Proceedings Volume 3273, Laser Techniques for Condensed-Phase and Biological Systems; (1998) https://doi.org/10.1117/12.306131
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

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.

Citation Download Citation

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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