X-Ray Diffuse Scattering Measurements of Nucleation Dynamics at Femtosecond Resolution

作     者：A. M. Lindenberg S. Engemann K. J. Gaffney K. Sokolowski-Tinten J. Larsson P. B. Hillyard D. A. Reis D. M. Fritz J. Arthur R. A. Akre M. J. George A. Deb P. H. Bucksbaum J. Hajdu D. A. Meyer M. Nicoul C. Blome Th. Tschentscher A. L. Cavalieri R. W. Falcone S. H. Lee R. Pahl J. Rudati P. H. Fuoss A. J. Nelson P. Krejcik D. P. Siddons P. Lorazo J. B. Hastings 

作者机构：PULSE Center Stanford Linear Accelerator Center Menlo Park California 94025 USA Stanford University Department of Materials Science and Engineering Stanford California 94305 USA Stanford Synchrotron Radiation Laboratory/SLAC Menlo Park California 94025 USA* Institut für Experimentelle Physik Universität Duisberg-Essen D-45117 Essen Germany Department of Physics Lund Institute of Technology P.O. Box 118 S-22100 Lund Sweden Department of Chemistry Stanford University Stanford California 94305 USA FOCUS Center Department of Physics and Applied Physics Program University of Michigan Ann Arbor Michigan 48109 USA Stanford Linear Accelerator Center Menlo Park California 94025 USA Department of Cell and Molecular Biology Biomedical Centre Uppsala University SE-75124 Uppsala Sweden Stanford University Department of Chemistry Stanford California 94305 USA Deutsches Elektronen-Synchrotron DESY Notkestrasse 85 22607 Hamburg Germany Max-Planck-Institute of Quantum Optics Hans-Kopfermann-Str. 1 D-85748 Garching Germany Department of Physics University of California Berkeley California 94720 USA Length/Time Metrology Group Korea Research Institute of Standards and Science Daejeon 305-600 Republic of Korea Consortium for Advanced Radiation Sources The University of Chicago Chicago Illinois 60637 USA Advanced Photon Source Argonne National Laboratory Argonne Illinois 60439 USA Materials Science Division Argonne National Laboratory Argonne Illinois 60439 USA Physics Department Lawrence Livermore National Laboratory Livermore California 94550 USA National Synchrotron Light Source Brookhaven National Laboratory Upton New York 11973 USA Departement de Genie Physique Ecole Polytechnique de Montreal C.P. 6079 Succursale Centre-Ville Montreal (Quebec) Canada H3C 3A7 

出 版 物：《Physical Review Letters》 (Phys Rev Lett)

年 卷 期：2008年第100卷第13期

页      面：135502-135502页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

主　　题：Ultrashort pulses 

摘      要：Femtosecond time-resolved small and wide angle x-ray diffuse scattering techniques are applied to investigate the ultrafast nucleation processes that occur during the ablation process in semiconducting materials. Following intense optical excitation, a transient liquid state of high compressibility characterized by large-amplitude density fluctuations is observed and the buildup of these fluctuations is measured in real time. Small-angle scattering measurements reveal snapshots of the spontaneous nucleation of nanoscale voids within a metastable liquid and support theoretical predictions of the ablation process.