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Fourth Generation X-Ray Sources and Optics III

DOI: 10.1117/12.621679

Wiley, Acta Crystallographica Section a Foundations of Crystallography, a1(61), p. c20-c20, 2005

DOI: 10.1107/s0108767305099149

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Ultrafast X-ray Studies of Structural Dynamics at SLAC

Journal article published in 2005 by A. M. Lindenberg, K. J. Gaffney ORCID, J. Larsson, K. Sokolowski Tinten, O. Synnergren, C. Blome, J. Sheppard, D. A. Reis, J. B. Hastings
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Abstract

The melting dynamics of laser excited InSb have been studied with femtosecond x-ray diffraction. These measurements demonstrate that the initial stage of crystal disordering results from inertial motion on a laser softened potential energy surface. These inertial dynamics dominate for the first half picosecond following laser excitation, indicating that interatomic forces minimally influence atomic excursions from the equilibrium lattice positions, even for motions in excess of an â«. This also indicates that the atoms disorder initially without losing memory of their lattice reference.