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Proceedings Paper

Ultrafast x-ray studies of structural dynamics at SLAC
Author(s): K. J. Gaffney; A. M. Lindenberg; J. Larsson; K. Sokolowski-Tinten; C. Blome; O. Synnergren; J. Sheppard; D. A. Reis; J. B. Hastings
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Paper 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 inter-atomic forces minimally influence atomic excursions from the equilibrium lattice positions, even for motions in excess of an Å. This also indicates that the atoms disorder initially without losing memory of their lattice reference.

Paper Details

Date Published: 30 August 2005
PDF: 7 pages
Proc. SPIE 5917, Fourth Generation X-Ray Sources and Optics III, 59170D (30 August 2005); doi: 10.1117/12.621679
Show Author Affiliations
K. J. Gaffney, Stanford Linear Accelerator Ctr. (United States)
A. M. Lindenberg, Stanford Linear Accelerator Ctr. (United States)
J. Larsson, Lunds Tekniska Högskola (Sweden)
K. Sokolowski-Tinten, Friedrich-Schiller-Univ. Jena (Germany)
Univ. Duisburg-Essen (Germany)
C. Blome, Deutsches Elektronen-Synchrotron (Germany)
O. Synnergren, Lunds Tekniska Högskola (Sweden)
J. Sheppard, Univ. of Oxford (United Kingdom)
D. A. Reis, Univ. of Michigan (United States)
J. B. Hastings, Stanford Linear Accelerator Ctr. (United States)

Published in SPIE Proceedings Vol. 5917:
Fourth Generation X-Ray Sources and Optics III
Roman O. Tatchyn; Sandra G. Biedron; Wolfgang Eberhardt, Editor(s)

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