Ultrafast X-ray Studies of Structural Dynamics at SLAC

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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 {angstrom}. This also indicates that the atoms disorder initially without losing memory of their lattice reference.

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8 pages

Creation Information

Gaffney, K.J.; Lindenberg, A.M.; /SLAC, SSRL; Larsson, J.; Tech., /Lund Inst.; Sokolowski-Tinten, K. et al. September 30, 2005.

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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 {angstrom}. This also indicates that the atoms disorder initially without losing memory of their lattice reference.

Physical Description

8 pages

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  • Invited talk at SPIE Conference on Optics and Photonics 2005, San Diego, California, 31 Jul - 4 Aug 2005

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  • Report No.: SLAC-PUB-11509
  • Grant Number: AC02-76SF00515
  • Office of Scientific & Technical Information Report Number: 878357
  • Archival Resource Key: ark:/67531/metadc874521

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  • September 30, 2005

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  • Sept. 21, 2016, 2:29 a.m.

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  • Dec. 2, 2016, 4:39 p.m.

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Gaffney, K.J.; Lindenberg, A.M.; /SLAC, SSRL; Larsson, J.; Tech., /Lund Inst.; Sokolowski-Tinten, K. et al. Ultrafast X-ray Studies of Structural Dynamics at SLAC, article, September 30, 2005; [Menlo Park, California]. (digital.library.unt.edu/ark:/67531/metadc874521/: accessed August 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.