Light Scattering in Solid IX pp 371-422
Ultrafast X-Ray Scattering in Solids
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X-rays are a valuable probe for studying structural dynamics in solids because of their short wavelength, long penetration depth and relatively strong interaction with core electrons. Recent advances in accelerator- and laser-based pulsed X-ray sources have opened up the possibility of probing nonequilibrium dynamics in real time with atomic-scale spatial resolution. The timescale of interest is a single vibrational period, which can be as fast as a few femtoseconds. To date, almost all such experiments on this timescale have been carried out optically, which only indirectly measure atomic motion through changes in the dielectric function. X-rays have the advantage that they are a direct probe of the atomic positions.
Keywords78.30.-j; 78.47.+p; 78.70.Ck; 63.22.+m; 78.67.-n
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